Uncle thing? Did his Uncle diddle him or something?
Nothing crazy interesting. Jason's uncle is a somewhat popular chef named David Rosov. The Misfits trolls found this out a few years ago, and started trolling him, making videos, etc.... They also dug up mugshots, police reports, etc... for things like drug use, etc....
Well, the uncle finally decides he's had enough, and goes to Jason's mother, and grandmother causing a stink that maybe Jason needs to be in a home, and that the whole Misfits culture is hurting him, etc.... He also tells Jason's grandmother to tighten the purse strings, and get Jason and his mother under control. The grandmother is apparently well off.
Anyway, Jason's mother tried to calm anything down, but the Uncle still pressed them, and she threw Jason on a bunch of drugs to calm him down. She also more or less banned him from hanging out with Lenny, and all those guys. He could only see them on special occasions.