OH man! that is fucked up. You always knew "shit" like that happens in porn all the time. Those dudes were real pros, though. They had a job to do and that wasn't gonna stop them. I think she ought to stick to vaginal sex.
That vid just shows some of the perils of a woman getting her asshole gaped and anus fucked, especially if it CONSTANTLY used like the second vid (who is she? that trooper is not Vicki Vette)..."shit happens" is common, and babywipes are necessity.