I have friends at Allegiant HDQ... What I've been told is they no longer saw the same level of quality present as when they first started using AA, and that there was also concern about AA being able to absorb their future growth. Call it "constructive eviction" if it makes you feel better, but it sure sounded like it was their choice, and they weren't "thrown out" as you put it. Or maybe they're just spinning their side of the story?...
That said, I agree that AA probably isn't as interested in the 3P work. And those white spaces in the dock plan are just getting bigger and bigger, since it looks like the MD80's aren't being replaced on a 1:1 basis.
My bet is that the "White spaces" on the roster are coming in a lot faster than the "white spaces" in the dock plan. By the way, during the companys report in June of 2009 there where white spaces projected by 2012, thats as far as they went, pretty much full up until then, by July of 2010 not only were all the white spaces gone through 2012 but now they were booked up with AA work to around 2015.
I'd heard from the company side that AA was going to dump North American so they could have 10 less heads at JFK, heard that it doesnt generate that many heads from an AA source and told from a North Americam source they have a five year contract with AA. North American was later seen doing training recently over at LGA for AA mechs (thrust reverser change or something).
The numbers I heard was around $100 per hour for line maint. If there are plenty of A&Ps out there why would North American be paying that much? Of the recalls who did come back to AA, some were from North American.