What exactly does Joe Lieberman have to do to get sanctioned?

Inquiring minds want to know.

Recall that after, if I may be permitted to reach for le mot juste, thoroughly ratfucking the Dems last November, Lieberman was threatened with the loss of his committee chairmanship, but kept it after promising to be a good boy from here on out.

I guess he has just too much integrity to keep his promises.