I miss him too.
But some posters have personal reasons that cause them to stop posting on Trad fora. There are many reasons, some of which you would never think of unless you were in that situation yourself.
I am not at liberty to discuss why he left, because he didn't give me permission to discuss it. But he did e-mail/PM me several times, and he told me why he was leaving.
Suffice to say -- he loved CathInfo, and if he wanted to participate in a Trad forum, CathInfo would be at the top of his list.
This would be a good occasion to say: please pray for him. He is an honest, devout, good-willed Catholic and I'm sure he could use your prayers.