When it jumped the shark *spoiler*

OMG when he put that guys hand into the garbage disposal I really felt Frank crossed the line completely. That was just so over the top he should have gone to jail for that. In the following scene he just controls the husband with self defence. Surely he could have and definitely should have just done that with the previous guy. That was a real criminal act destroying that mans hand. Also I thought a bus chase was a bit stupid to, let alone playing chicken with buses. And the danger to people driving on the roads while they are speeding in the buses, and the destruction of peoples parked cars just crazy behaviour. I think the hand incident is where the movie jumped the shark for me.