At the very least, a Parliamentary intervention resulting in severe sanctions for A might just keep the RF on their toes, and realise that we are a Democracy and Parliament is paramount, not the house of Windsor. Any of them could be next if they act out of line, that would be a great incentive for the RF to behave and be accountable to us.
I agree with pp that this is a pivotal moment for the democratic nature of the country. Either Parliament rules by our democratic vote, or the RF does without. Parliament should take note and do something. I really hope some clever journo will point out how outrageous the (in)actions of Parliament are, fudged as they are to try and hoodwink the people.
Truly awful.