You appear to be describing your quads "making contact" with the bar: the bar should be in contact with your quads to begin with, and leave them once...
If you use open loop straps (the kind recommended for the deadlift) then releasing the grip releases the straps. The force on the wrist won't be any...
The best exercise to restore that range of motion is the press. If your lockout is correct and can be achieved with weight and without pain, I cannot...
You can clearly get your back into extension: you do so sharply at the beginning of each rep. Just do whatever you do at the beginning on the unrack...
I admit I'm not familiar with the EU situation, which appears to be more dire than I imagined. But the damn thing is not really an engineering feat....
Honestly, man, a squat rack is not that expensive. You can get yourself a relatively small footprint squat stand for a couple hundred bucks that will...