I am not a legal expert, but think playing AB last week strengthened the Patriots case.
If the team sat AB last week it could be argued that they intended not to pay the 9 million because of past violations that the Pats should have known about when the contract was signed. It's even been reported privately that they would not have signed AB if the team knew about the lawsuits. The fact that the team signed him quickly, and did not do their due diligence is not the fault of the player.
Now by playing him last week, it is clear the team is cutting AB because of violations since the contract was signed.
There is a burden on the team to prove they intended to follow through on the agreement from the date of the contract forward. Pointing to a past violation made a weaker position and could have given AB's team an argument that he was entitled to the money because the team was acting on their own neglect.