It's likely that this person is just running non-sanctioned tournaments. This doesn't require a UDE number from the TO. In fact, I think it doesn't require a TO at all.
The process for sanctioning a tournament requires for the TO to have a UDE number and a password. If the TO does not have one (or doesn't remember it), then they can't sanction a tournament.
While it's possible to add the person into the pool of players with a temp UDE number, it's not possible to select that person in the tournament creation screen as the TO. This is working as intended.
Alex Charsky
Judge Manager
Upper Deck