Great news. I did also noticed his absence and start s thread here asking about his absence before this topic being moved from Meta. I like Tman and am glad he is doing fine.
The problem with his absence is that Tman is a dt member and when one of his feedbacks need to be revised, there is no one who can help but Tman himself. See the case of bestchange user where only the feedback of Tman didn't changed despite the case subject of tag has been resolved. Maybe it's not a big issue but i think dt members should be always active as their feedbacks is publicy shown and may need updates.