This is a tough situation. First, is there any real proof that it happened or is it just verbal. The court appears to have given some kind of an order that asks for everyone respect eachother, but it isn't based on any verifiable evidence. If I were trading for him, I would want to get to the bottom of this prior to doing so.
As for value - who knows. The big issues is this: is this isolated where the two women have been going at it and there is back and forth or is this a case of someone going after someone else. And yes, Hoffman likely knows what is going on.
As a Blues fan, I was lukewarm on him to begin with and now, I would prefer not to bring him in at all. A wife can damage a locker room as much as a player. I would prefer to stay away.