He got a helluva deal the first time around. Something unbelievable and surreal. But the fact that he was at a party a few years later didn't seem like a big deal to me. Parole violation, I get it, but I doubt that a judge would have done much more than give him a warning about attending any more parties.
Running off turned this into a major situation now.
I thought that part of the stipulation was any partying/drinking was a violation of his probation. And any violation resulted in prison - hence the running.
He turned a "coulda been" into a "rat-now, fer sure!"