[3][1] In June 2010, criminal William Kapris accused Marus, Tony Aimo and Patrick Pruaitch of corruption, alleging that they benefited from his crimes.
In December 2010, the Supreme Court overturned the election of Paulias Matane as Governor-General and directed Marus to recall parliament within forty days.
[10] The continued vacancy of the Governor-General at a time when the opposition was claiming the Prime Minister's position to be also vacant due to the absence of Michael Somare sparked what was referred to in some quarters as a "constitutional crisis".
[11] Marus subsequently recalled parliament for the Governor-General vote, but declared that he would not entertain any other business at a time of moves to oust the government.
[12] The opposition was unable to reach Marus at his office, home or elsewhere and accused him of intentionally disappearing to prevent them giving him notice of a motion of no-confidence in the government.
[14] In August 2011, Marus was one of the defectors from the government as Peter O'Neill ousted Somare as Prime Minister, with Speaker Nape presiding over parliament.