[3] Although he accused Božo Petrov, leader of the Bridge of Independent Lists (MOST), that he had a secret agreement with the conservative Croatian Democratic Union (HDZ) and its leader Tomislav Karamarko on how to take over power after 2015 parliamentary election, he eventually joined MOST electoral list and was elected to the Croatian Parliament, but after ensuing months of post-election negotiations and eventual agreement between HDZ and MOST, Petrina left MOST and continued to serve as an independent MP.
On December 19, 2007, Petrina was found guilty at the Šibenik Municipal Court on the count of attempted grievous bodily harm, and sentenced to four months' imprisonment, suspended for one year.
On 10 October 2008 Petrina's appeal was dismissed by the Šibenik County State Attorney's Office, and on 29 April 2010 again at the Croatian Constitutional Court.
European Court declared a violation of Article 6 §§ 1 and 3 (c) of the Convention for the Protection of Human Rights and Fundamental Freedoms, ordering the Croatian government to pay EUR 7,300 in damages.
[5] According to the results of a survey conducted by 'Šibenik TM' among the citizens of the Šibenik-Knin County in 2011, Petrina was declared the politician who embodies the highest number of desirable and positive qualities.
"It's not just the frequency of his appearance in the media, but primarily due to the impact that he had on molding the public opinion and political attitudes of citizens.".