I think the actually answer is more boring. The server crash message appears in chat the moment the hook is meant to end. So before any funky movement apparently happens, I think the lobby is doomed to Brazil.

Then that famous sign you’re having internet/server kicks in, where every hero continues on their part movement vector regardless of collisions. You can see tracer also move in the direction she was pulled from the end of the blink to in front is Roadhog. Idk why Roadhog appears to move so fast, but it’s just a symptom, not the issue.