The possibility of strangulation and tied leggings, if anything, give greater credibility to that stewardess' claim that he was into kinky sex and might have had something to do with her death.
Perhaps they had one last fling and it was disastrous. Perhaps she WAS moved from his apt. (They never mentioned the physical evidence they took from his apt.)
Whatever the outcome, at this point her discovery has only brought MORE attention to the possibility of Condit really having done the venal deed.
Remember his wife was in town. Her apartment would fit better into the time line. Have plenty of time for "a quickie"; Chandra dead; plenty of time to move the body and clean up the apartment. They weren't looking for her for days (Condit didn't even call her) HHHMMMmmmmm