Hard to know what the guy did or
didn't do, or what the girl did or didn't agree to,
Strange: a tape recorded with a porn movie constitues evidence ("pornography found on premises"), while one with a record of what actually happened in the room can't be used as evidence in court.
As for the issue of the woman's consent, I actually carry around "consent forms" with me, so that I can get any partner to sign a written consent ahead of time, just in the case of such little problems. Been carrying them around for about 5 years now. Haven't had the opportunity to use one yet... <vbg>
Don't bother. Just ask for a receipt or pay by INTERAC.
cheers, caveman ;-)