The contract is completely correct and fair for both sides.
Nobody forced Rossi entering this agreement and I can not see that IH has done anything to breach the agreement.
But on the contrary. They have fulfilled their previous obligations. They paid $ 11.5m for something that they had not received, if we believe IH, and for claims that are generally questionable.
That you afterwards will not raise 89m$ corresponds to the normal human mind. Especially, if an obligation does contractually not exists, because the preconditions are not fulfilled.
Only when it comes to Rossi, then it appears as if this normal human mind lacks in some people.