Originally Posted by
captainpp
Can't tell for sure but it looks like you've got your thumb around the bar, rather than over it. You don't need to actually hold the bar up with the hands - just pin it against your back, so no wrap around thumb is necessary. You'll find it easier to get your wrists straight if you stop doing this.
I don't consider myself competent enough to give you any other feedback. I've just backed down from 92.5kg to 80kg to work on form myself. (If it's any consolation, we started on about the same date and your numbers are above mine!)