Is this all an act?

Joaquin Phoenix took his hip-hop act to a Miami club last night, angering those who were foolish enough to come see him by not taking the stage until almost 2 a.m. Then this ensued -- he jumped into the audience to go after someone who was heckling him. What I find interesting is that brother-in-law Casey Affleck was there filming the entire thing. Hmm. Makes you wonder, doesn't it.