People just go full re-turd when you have to play in reactor. I was going in first place with my volus engineer in there by about 60k, after a guy joined and started killing me every time he could.
Also, after telling I didn't have any more medigel (in another game), a teammate closed me there while deactivating device, only to hear a 12 year old yell "TROLOLOLOLOLOLO". If I could punch people over my screen, I would have punched him so hard in the face I would have made a black hole.
I've done this to friends on purpose. BUT one time I did was totally by accident. We were taking heavy fire and I jet packed sideways to get away momentarily before jetpackong back in. But because A does everything the game assumed I wanted to not only jetpack into the reactor but also hit the switch too. Took down my whole team. That was a PuG match too...so shocked I wasn't booted after the game. I tried to play above and beyond after that to make up for my accident.