For one thing, why would he want to get that shitty cunt off (the ex-wife, that is)? Secondly, even if he can, it's probably not a bad idea to try to resolve this ED issue. He should talk to a psychologist, but apparently that's not an option over there.
It's likely that she wouldn't allow him to try that. I mean, she's very mentally abusive. It's likely he wasn't this "pathetic" before everything she did to him.
I'm a little scared for him that she's playing him or something but if the way she's behaving is her genuine feelings then I can't wait to see all the healing she gives him.