You're most likely correct in that it's come from taking that time-out. My guess is that once the time is over users are automatically set back to 'member'.
I cannot change it myself, so the only options I can think of are either to buy a new title, or wait and see if Jeremy/Justin is able to do anything.
Sorry for the inconvenience.
I noticed yesterday that mine changed from 'senior member' to 'member' too. I thought that perhaps the post counts for attaining each rank had been changed?