^If I remember correctly, Tom was mentioned by Will Riker in one of the Marvel trek comics from the late 1990's. The Telepathy War one-shot maybe. I don't remember if he was ever seen on panel, but I think it's revealed that Tom wasn't actually dead. He was just a prisoner of the Cardassians. Although, it makes sense to assume that after the Dominion came on the scene they either killed him as an enemy, or planned on using him for some nefarious plot. It's also possible that Tom was freed as an act of goodwill by the Dominion. They had made some overtures to the Feds and to Bajor when they first arrived, not to mention the non-aggression pact that they signed with Bajor. I know Tom isn't a Bajoran, but as a Maquis they may be more likely to help get him out of the stockades.
It would be great if he could somehow appear in the DS9 relaunch. He's probably good friends with Ro, and from the DS9 episode he did, it also seems like he gets on well with Kira. Of all the officers to serve under, she would probably be one of the ones most likely to give him the benefit of the doubt, considering his checked past after he was originally rescued by his "brother" and the Enterprise crew.