[3][9] He is a co-inventor of patent WO1997003409A1 filed under the title "Method and system for providing credit support to parties associated with derivative and other financial transactions."

[12] The next year Haddock was named dean of the Robins School of Business, of the University of Richmond, by then president William Cooper.

[15] During his tenure there Haddock was invited to speak to the Rotary Club of Tysons Corner, and was named to the Association to Advance Collegiate School of Business, where he was part of the Initial Accreditation Committee between 2011 and 2014.

[16][17][18] When he became President of the University of Puerto Rico, he was invited to the aforementioned body's annual conference as a speaker on alternative revenue streams.

[20] Additionally, he was named chair of the Advisory Board to the Greater Washington Hispanic Chamber of Commerce in 2011.

[26] Later that year he was named dean of the University of Massachusetts Boston's School of Management, where he also led its Entrepreneur Center as interim director and was chairperson to the Affirmative Action Advisory Committee.

Haddock opposed the gradual increase proposed by the FOMB which would raise the cost of tuition from $124 during the 2019-2021 academic year to $157 by the 2022–2023, as well as other cuts stipulated in their plan.

[43] These allegations arose from the release, apparently against MSCHE policy, of the Río Piedras campus' show cause report, which included the teach-out plan.

[44][45][46] Haddock assured that the university would remain open and submission of teach-out plans are a routine part of the reaccreditation process.

[49][50] On three occasions the HEEND held protests blocking the entrance of non-faculty employees who worked on these statements to the university's central administration.

On a fourth occasion, on 20 February, which Haddock called "irresponsible" and accused the HEEND of putting the accreditation at risk, employees were not able to access their workplace by car, but were permitted to do so as pedestrians.

[55] In an interview upon announcing the completion and submission of the 2017 financial statements, Haddock claimed that the university had been late to turn documents of the same nature for the past eleven years.

The already executed cuts, Haddock claimed, showed that the UPR could survive "without laying off employees or closing campuses.

[62] Haddock was successful in making an agreement with the Puerto Rico Federal Affairs Administration (PRFAA), where the university would have a representative in the agency.

[63] This position, as well as a $1 million in additional contracts and the buying of three new robes for the Board of Governors, received much criticism from the HEEND.

[64] Haddock stated that it was "incredible that the resource contracts that worked in the process for the University to meet the requirements of federal agencies and that helped us achieve the extension of accreditation" would be deemed "unnecessary," and that resistance to initiatives that would increase revenue and make university bureaucracy more efficient was "absurd."

As to the acquisition of robes, Haddock clarified that this was necessary for the members to participate in graduations and official ceremonies as required by university protocol and policy.

[67] In May 2019, Haddock order a stop to the eviction of Nelson Sambolín, a renowned artist who had his workshop at the university headquarters at the San Juan Botanical Garden.

[78] Allegedly, in a letter sent to the President of the Board of Governors in January 2020, he attempted to detain payments to employees of four campuses which had remained closed for two days during the preceding Fall Semester because of student protests against the budget costs.

[79] On Wednesday, 7 July 2021, interim-Secretary of Education, Eliezer Ramos Parés as the ex-officio representative of the Department of Education in the UPR Governing Board,[80] in an on-air interview with Jay Fonseca on the Telemundo[1] program Día a Día,[80] announced that the board would request Haddock's resignation.

Ramos Parés confirmed that he favored the resignation and that this was due in part to accreditation problems at the Medical Sciences Campus [specifically its neurosurgery and radiological technology programs] and other faculties.

[1][80][81] On an initial occasion, the UPR press office stated that Haddock had not received an official notification from the Governing Board.

[80][81] During the development of the event, he was at an undergraduate graduation ceremony at the UPR at Utuado,[83] and received news of the request extra-officially.