I have finally gotten that monkey off my back! Last night, my wife and I joined a pug guild group and downed Deathwing! Gauu and Charix, Destroyer's Ends! I was very pleased to have done it with my wife in the group (I wouldn't have otherwise), and we apparently made a strong impression (my wife mathed their top healer in total healing and HPS, and I topped in DPS and damage). They made allusions to recruiting us. They are a small group of folks in a level 5 guild, so I may see what their opinions are of joining OUR level 25 guild. We could easily keep their raid group autonomous within the guild if they have concerns. Who knows? It's just brainstorming at this point.
I dunno if any of it will work out, but I'm just thrilled to have downed the big dragon.