The ownership group has money. The issue is that Trotz was looking to rip up a contract for which two more years had been triggered owing to playoff success. More than the money, they resented the unwillingness to abide by a contract he'd signed. If he was unwilling to do so, why sign it in the first place? The answer of course is that shortly after he signed it, Babcock signed and it changed the salary landscape for coaches. Everybody wants to get paid.
They weren't going to renegotiate a contract out of principle, and liked their man on deck anyway. So they agreed to let him out of a contract they might have chosen to enforce, which they probably could have done, however counter productive that would have been going forward. They wished him well and thanked him for his contributions to team success.
It was never about the money, though. This isn't the money they otherwise would have had in the coffers to pay Trotz. They were always going to be a cap team, minus some cap flexibility buffer room to use at the deadline.