From what I've read, they don't seem to get along.
Shrum is good at running everything but presidential campaigns and McAuliffe is good at fundraising (personally, I think he's a crook looting the DNC) and nothing else.
Clinton did not want or trust Shrum with his campaign, and is very clear that Shrum is not "one of there guys". Terry is a clinton guy, and based on several articles (including Newsweek), its clear there is tention and mistrust between the clinton folks and the non clinton operatives.
Also, I might as well say it, I'm not Karl Roves biggest fan, but I do like Melhann alot but my personal favorite is Ralph Reed. He's underrated but brilliant.
Terry socked it to the IBEW pension fund, so I wouldn't be surprised to see Big Pussy licking a little cream that "slipped" out of the DNC's saucer.