He wasn't the TOR lead writer. Far from it. In fact, I'm not sure he actually contributed any significant content to the base game, as he was still working on ME2 at the time. I suspect his involvement won't be seen until future major content (major patches/expansions) rolls out in the next 12-18 months.
He was the KOTOR and Mass Effect 1 lead writer, and co-lead writer for ME2 (with Mac Walters).