I say let OM take care of her, he will get tired of it real quick.
I'm hoping he's already starting to. My W has told me recently that they (she and the OM) fight a lot, sometimes about me, and that she has defended me on more than one occasion.
Specifically, she has argued with him about how much better I'm handling this difficult situation than his W is.
(That's because she's not DB-ing!!!)
Also, if you're madly "in love" with a woman, you wouldn't be moving 2000 miles away to start a new job with no guarantee that she will follow you there. I know I wouldn't.
M: 15 years BD: 6/25/14 EA/PA: starts 5/14/14 11/30/14 - A ends 5/15/15 - D is finalized. 11/28/15 - Start of new LTR with a wonderful woman (and still going strong)!