Here is a clip of Andrey Malanichev at 2012 Super cup Titans.
Squats 470kg for the first attempt. Asks for 490kg on his second. Walks out but something was wrong, so he racks the bar again. After all that extra effort spent he goes for a second attempt, but can’t get the 490kg up.
That must take a huge amount of mental power to go for that kind of weight again.
Thanks Dan for sending in that video.
Update: Complete Recording of the competition.
The fact he got back under the bar again is impressive enough. Imagine unracking your max squat and then reracking then the second time going for it!