Here is my suggested response to such bully tactics regardless:
Various Authorities have been informed, and if required the following response applies from official sources:
" this is bullying tactics and unfortunately frequent in the industry." &
"In regards to withholding security clearance documents etc this can be investigated if it needs to be"
Just because management writes an email like this, does not mean it should be accepted!
If various companies does not have qualified people to write contracts that can not be disputed, I have to say, that this is the fault of the company and not the crew!
If there are loop-holes that can be used, why should they not be used?
End of the day, everybody are used, either the company uses the pilots, or the pilots uses the company!
You reap what you sow!