Clanger32 has it:
No matter how many "legal engineering" is made by means of contracts, agencies, etc... A group of good lawyers can show to any judge or jury that these pilots are actually RYR or EZY pilots, that they are "deemed workers" or whatever the term is. It is not so difficult. Against legal engineering, you can use good lawyers. BALPA should coordinate such movement and put an end to this amazing cut in worker rights. It is a trade union, isn't it?
Imagine that RYR has to pay you all the vacations and other things they did not pay to you in the last years. It is a lot of money. Your money! which was stolen from you by means of legal engineering.
They are fu*ing us with clever and complex contracts? OK, then let's defend with lawyers. It is the only way. Anything else is like trying to kill an armoured samurai with your bare hands.