Amiga Inc. may decline to change the agreement and pay early. When changes are requested to an agreement/contract, both parties must agree and usually sign a revised agreement/contract.
That will still make them look shady, as Bill McEwen pretty much accepted the change by replying what he did.
I think it is too late for them to save their face now, unless they do infact have the money to cough up. The amiga name will pretty much be worthless if this is the case, as it just has too much negative press already.