Notice the trepidation Rush has. He ends the transcript with, "He's apparently still working on this and trying to make it become law. He does have some cosponsors. Early cosponsor was Dick Lugar from Indiana. I think others have come and gone. I don't know the status of it, but the caller was right, Biden is indeed working on this."
Biden is indeed working on this? That's his great epiphany? That's not even an expression of an opinion. The only opinion he offered is that he opposed the handout to the lawyers in the form of forgiveness of their student loans. Rush went on record as being opposed to the wealth redistribution aspect of Biden's plan, but that's as far as his opposition or criticism went. As soon as he saw that it was co-sponsored by Dick Lugar, a Republican senator with a few conservative credentials, Rush's concern was muted. He then only would go so far as to confirm that Biden was working on it. In fact, it's like he ended the call by saying that two senators from different parties are working together on a proposal to fight domestic violence -- hardly a call-to-arms.
In short, Rush either doesn't get it (how bad VAWA is), or he is unwilling to tread into the gender wars. The only person who we can say shed any light on the destructive effects of VAWA is Quentin, and even then he was only briefly allowed to expound upon that.