Originally Posted by
NJNY
I don't think anyone can conclude that this was about being prudish. I agree with the earlier poster, if this is a woman alone in a locker room naked, and a man walks in, then it is a vulnerable and potentially very scary situation.
I agree with this. OP doesn't go into any detail about this, but it doesn't even sound like the repairman apologised or made any move to back off even after OP asked him to leave. That alone would add significantly to the vulnerability / fear factor.