I am in this boat. I have one way flights on Delta booked using NWA FF miles. If Delta were to strike, I would have to go back to NWA and beg for them to put us on Continental or NWA, though NWA doesn't fly all the way to Corpus Christi. To compound things, the rewards flights for my dates are gone, so who knows what is going to happen.
I will say that I think things will work out fine. I think my flights on Delta will go off in May as scheduled, but if they don't, I will have to work with NWA to get something done.
Duds