At this point, I don't think we can completely rule out any illegal activity on Chris's part. He's disturbed, nervous, and frankly, not very smart. It's a perfect recipe for doing something which a sensible person would later regret. Chris, honestly, doesn't have the judgement needed to keep from doing something really bad (out of panic or tantrum rage) and it could land him in jail again.
All that stops him is the lack of opportunity and his general laziness.
Let me repeat that last part: lack of opportunity and general laziness. Chris won't exert any effort into his revenge against the world, and sitting in front of the hoard most of the day doesn't grant him many opportunities to do anything dangerous. However, I think it's only a matter of time until he's out getting q-sands one day, sees a car with a decorative plate reading "Larry

's Meagan" and Chris decides to take a key to Larry's T-Bird. Or, Chris starts vandalizing an Xbox display at Target, only to be chased by Loss Protection, stumble over a baby stroller, and have to contend with the store staff AND a set of pissed-off parents. Or Chris decides to flip off the wrong cop one day, finds flashing lights in his rear-view mirror, hits the gas and plows into a school bus.
I'm not trying to predict the future, I'm just saying that Chris now seems compelled to make bad situations worse. I'd argue that he no longer has the forethought to stop himself when what he's doing could get him in trouble. Yes, he's afraid of jail, but he doesn't REALLY know what it's going to take to stay out of there. His laziness and pussiness are the reasons he's not there RIGHT NOW, but Chris's judgement has declined significantly from where it was even six months ago.
tl; dr: Chris is not planning a major crime spree, but he has poor judgement and no impulse control. The end result will be the same.