Obviously a he-said-she-said situation, but being fired from a posh security position for "sleeping on the job" seems like a trumped-up reason for getting rid of someone. I wouldn't put it past Kris to be hitting on the help (especially considering she probably wasn't getting any dick from Bruce for a long while before he turned into a she), and seeing as how Kourtney has popped out three kids and is starting to hit the wall it wouldn't surprise me if she wasn't trying to get a little extra-curricular validation from the security detail, either.