Originally those cities were not suppose to close prior to dec. 31, 2011 which is ironically when the contract is up for negogiations.
Actually that's not correct. I thought is was when they announced the furloughs and it was a grievanc,e but it's not, at least not on those grounds. The CBA states:
... may not be out-sourced unless the station's mainline weekly jet departures are reduced to a level below twenty-eight (28) weekly departures on an annualized basis
I don't know what the weekly flight count is, but the CBA (as modified by the TA) does permit it before the end of 2011 IF there is less then 28 weekly mainline flights. I didn't feel like typing the cities out, but that quote follows the list.