Sometimes (mostly experienced this in the dockside alerts coz of the small space ad tons of destoyable objects) I'd get knock back into the damn crates and get stuck in the flying back animation that I can't even move or do anything. And if by chance I "land" I get stuck in the crates and can't move (although sometimes I do get stuck in other crates outside of alerts). It happened a few times and in bot cases I forgot about the killme option...although I would really like to not have to do that, but it's timed so I really have no choice like can't go to my hideout or anything.
Also this is really annoying, when I join alerts, the alert doesn't put me in a team, and just wants to kick me out like a troll it is. :C