It actually had nothing to do with deadlifts or bad form. I was working on my bench press and couldn't get the fifth rep up. I set the bar down on my chest and instead of calling out for help (to any of the fifty people standing nearby), I thought it would be less embarrassing to just roll it down to my knees and then stand up and set the weight down. Stupid decision. Once I got the weight to my knees, I severely underestimated my back-to-chest strength ratio and the weight plummeted to the ground, pulling my (arched) back down with it. I think it was about 215 lbs (97 kg).
The key to deadlifts is good form and not letting your back arch at all. I would recommend getting an expert trainer or an advanced lifter to help you practice your form if you are worried about it. It's worth the time to prevent an injury.
You should really use safeties when bench pressing. I just read about a guy who died doing a bench press when he lost control of the bar and it landed on his neck!
Man... I feel your pain.. been in the same situation a few times, but why not just shame-roll (drop the bar to one side and just sort of wriggle out from under it on the opposing side)? It sucks but keeps you safe.
Seems like questionable advice - sounds like a great way to accidentally drop a bunch of weights to the floor if you're at all uneven with your bar path (not at all unusual when fatigued).
Not only that, but even a little shift in the weights can cause problems with your lifts. Warmups (135 or so) I'll leave them off, but anything over 200 I'll put them on.
The key to deadlifts is good form and not letting your back arch at all. I would recommend getting an expert trainer or an advanced lifter to help you practice your form if you are worried about it. It's worth the time to prevent an injury.