Well I kinda did, Tom
Did some back squatting and then went on to DLs. Pulled cleanly up to 455 and then tried for 475 and it actually came about halfway up really quickly but when i got it there i heard "pop pop" from my lower back and immediately dropped the weight.
Needless to say, my lower back is SUPER stiff today. I've tweeked my back before but this was the first time i'd heard popping like that. I've been icing it and i'll keep doing that and just take a couple weeks off of squatting and DL'ing. :/
Hopefully everyone else was safer than me this weekend.