We chatted about it, joked about it, argued about it, spoofed it. “Brokeback Mountain” was everywhere in our popular culture yet it lost the big Oscar it was supposed to win. Was there a “Brokeback Backlash,” or was “Crash” just the worthy contender that came on strong in the final Best Picture stretch? There were as many theories being offered up Monday as there are “Brokeback” parodies on the Internet. A.P. reports.