Instead of doing stock buybacks SW could use it's cash to approach the AMR creditors and try to tempt them with a strong offer for a bunch of -800 leases, 737 delivery positions, east coast slots/gates and whatever other parts that they could use. Maybe it's a longshot but SW could help to make AMR less of a competitor by trying to force a partial liquidation/downsizing of AMR by making an offer to the BK court for pieces or possibly even buy the whole operation while it's still in BK and break it up, keep what they want and liquidate/reject/reorganize/spin-off the rest. The creditors just want their money and AMR is going to try to give them as little of it as possible. AMR can offer equity to secured creditors but SW can offer cash, cash is better. This is ATA only bigger, SW should introduce a competing plan to the creditors in court and throw a wrench into this thing. Back AMR management into a corner to prevent them from getting too good a deal and becoming a thorn in the side of SW.
If SW is worried about a rejuvinated AMR with lower costs why not try to prevent if from happening in the first place? SW should be on Boeing's case as well (and enlist their help) as it appears they are ready, willing and able to come to the aid of AMR at the expense of SW. SW should twist Boeing's arm as hard as they can to get some sway with them and make them less generous to AMR, AMR's 737's and delivery slots could solve a big fleet rejuvination issue for SW.
There's a potential "grand bargain" here to be made and if SW doesn't jump in as a spoiler it's probably going to be between AMR and LCC which will give SW another huge competitor with low costs. SW may be able to force a breakup of AMR and get some valuable parts instead of letting LCC get it all. If nothing else they can try to jack up the price that LCC will have to pay.
You can either complain about the competition or you can do somehting about it. SW has the cash to do something about it. SW should never have allowed LCC to survive when they were down, let's see what they do with AMR. SW has the chance to jump in the ring and greatly complicate the situation at AMR's expense, that's what competitors are supposed to do; create chaos for the competition. This is a dirty industry, you have to get down in the dirt and fight dirty to win.
I don't have any ill-will towards American employees but in this industry it's kill or be killed, there is no middle ground. It's like the TWA situation except this time AMR is TWA.