From a different angle - although it may be gratifying to have the boys "side" with you, it's not usually in their long-term interests to be estranged from either parent. My ex-husband grew up in a family where his mom was a WAW when he was a teen - the boys all sided with their (devastated) dad, and ended up cutting off contact with their mom. I encouraged my ex to reconnect with her when we were in our 20's, one brother finally reconnected in his 40's, the third, to the best of my knowledge, still estranged in his 50's. The legacy is long and difficult and worse usually than just having some polite, minimal contact.
Now - your boys are entitled to express their disapproval, don't get me wrong. But you should do your best to encourage them to have SOME contact.
Also, be aware of the body of law around "parental alienation". Some women have lost custody of their children because the WAH has accused them of "parental alienation", when really, the WAS was the one causing anybody to be alienated. Still, you want to be VERY careful to stay on the right side of the law here. Keep records of EVERYTHING, copies of all texts and phone messages, take the kids to a counselor - whatever you need to do.
