Yes, it sounds insane but bear with me.
After defeating and processing The Revengers, Beast talked to Wonderman who told him effectively to shut the Avengers down when he comes to realise that they did more harm than good.
Now during AvX The Avengers were getting paranoid about the Phoenix and began to plot against it to which Beast would have no part. He explains how they hadn't done anything wrong until that point and the they had done more good than evil, then he walks off from the Avengers claiming he would have no part in this.
So logically from his point of view The Avengers are responsible for provoking the Phoenix and causing problems in that regard.
Now I'm not saying he has the power to whoop their collective asses but he is a respected scientist and public opinion of The Avengers was brought into question when Captain America refused to argue Wonderman's points so what would stop him from using is respected position to launch a public attack on The Avengers?
Could he potentially lead a public movement against The Avengers or am I just being utterly stupid?