Given her (and the two other) accounts, this absolutely was sexual battery. A drunk, intimidated, or otherwise incapacitated victim does not give an attacker free reign to do whatever they feel like doing. Drunkenness on the attacker's part is not a defense.
If you start touching someone like this, it is not their job to stop you. It is your job to be, beyond a shadow of a doubt, positive that the touch is welcomed. If you are a grabby drunk, don't get drunk.
This is common sense. It is also the law.
I cannot even fathom how he could possibly have a case for libel. We have three accounts, largely the same, as to the facts of the matter. Her account must be a lie (substantially, not in details) for libel to even be a possibility.
Nor can I understand the sentiment that his lost job is somehow recompense for the act. It is just a job, not jail time.
It is so terrible that this happened. To heap these sorts of reactions on top of it all is very deeply disappointing.