He's not a criminal but he stopped being the lead contributor to Bitcoin Core to join the contentious Bitcoin XT project. The motivation for this project is a debate about whether increasing the Bitcoin blocksize is an acceptable way to address scalability. In general, it showcases dissent in the consensus policy that governs the way Core changes are made.
More background on this: https://bitcoinmagazine.com/articles/gavin-andresen-i-might-...