Was This Push DIRTY? Breaking Down Risacher's Scary Fall Frame-by-Frame

I went frame-by-frame on Risacher's scary fall and caught something the Hawks announcers spotted - Gillespie's late push in the back. This is a no-no in basketball. When a player's already committed to the dunk, that kind of contact is dangerous and unnecessary. You can see it throws off Risacher's balance mid-air, forcing him to grip the rim longer than intended. The mechanics of this play created a frightening land...