a little long winded but I'd like to see it pan out like this at survivor series;
Cena does his usual sh*#*y entrance stuff (coming out seperately from Barrett to a large 'kiddie pop') playing up to the fans, being 'superman' etc. When the match starts, he calls it fair all the way through, pulling up Barrett & Orton when/if they bend the rules, warning BOTH of them etc. Barrett slowly gets more and more frustrated with Cena as the match goes on, shouting at him to 'start helping' etc and reminding him of the stipulation of the match...but Cena takes the moral high ground and doesn't relent to Barretts orders - After 15-20 mins Cena takes a 'ref bump' of sorts by a complete 'legit' accident from Orton while he is on top. Now, with the ref down Nexus members attack Orton and hit him with a chair for example - knocking him out cold, all 3 men down in the ring, even barrett doesn't realise whats happend, the kids in the crowd going nuts trying to tell Cena whats happening etc. As Cena starts to stir 'unaware' of what has happened, Barrett hoists Orton up for wasteland, nails it and Cena groggily counts 1....2...3, NEW CHAMP - HUGE BOOS!. Orton then comes round, realises whats gone down and attacks Cena (cue crazy viper etc etc) the Nexus then come to Cena's aid and lay out Orton again then they retreat to the back quickly, the place is in shock.........AWESOME!!!!!! the Miz with his lackey come out and he has his briefcase in hand, the bell rings and the Miz takes it to Barrett, totally working him over for 5-10 mins, scull crushing finale, ref counts 1...2....Cena pulls the ref out the ring, DQ! Miz wins but doesn't get the title, nexus all come out and clear house, hoist up Barrett and celebrate then after a staredown Barrett offers Cena his hand and Cena ACCEPTS! they hug, huges boos, nexus theme hits and cena raises barretts arm in victory.
this sets up a lot of potential angles i think, the nexus could be huge, working through all the titles on the show until they hold them all, Orton could fetaure as too could Miz. Then there could be the rest of the locker room pissed at Cena for joining nexus and 'selling out' etc.