Martin Alvito
Player Valuation: £50m
They cant (without support of the six) - to remove or add someone to the PL would take a vote of 75% majority rather than the traditional 14 votes. The 14 cant go off on one either way.
That's a legal question, but I'd be willing to bet that if the 14 clubs vote to expel the remaining six for a violation of league rules explicitly punishable by expulsion, it'll hold up in court.
The reasoning is straightforward enough - if they can't, any sufficiently large cabal of members can break the rules and serve as the jury in their own case, rendering the rules meaningless.