In response ...
1) Wait until you get up, you should be paying attention and really can't make a good job of straightening yourself whilst kneeling (although occasionally I try myself)
2) Yes, always
3) Yes, we all struggle from time to time (at least that is what I am told!)
4) Your choices are this ... ... ... bitch about your hand turning blue or relax and perform the technique because if they are holding on so tight, there will be a lot of energy to use - you just need to find a way to exploit it all!.
Thats my thoughts on it!