Sorry to hear about your bad day, stimpy.
I agree that it is much easier to be rude over the fun than in person, so I recommend going to SNA tomorrow, go to UA, snap out your 1K and demand to be placed on the priority waitlist.
I'm not surprised that your BA Gold/oneworld emerald card didn't get much pull from American. I've noticed good treatment from for oneworld members from other oneworld member airlines, but have seen little from AA in offering a special hand to elites from other oneworld airlines.
Good luck.