EDIT: no, wait... Omar couldn't be there because he had a show the day before.
He was already writing "lighthearted" songs before Bedlam was released, I don't think it has anything to do with Ximena. All those agressive/dissonant records we got were recorded around 2005 and 2006.because there is a HUGE difference between the Omar Rodriguez & Lydia Lunch EP and the songs i heard in cologne.
How can you be sure? It may be just an Omar album with her vocals
it's definitely not only "omar quintet wanking + some vocals on top".