I was, from late October to late June. Now I'm off of M.E. and on an unannounced project (still at BioWare). I don't have the battle scars of the guys pulling the all-nighters for the past couple months (although as a writer, my need to pull all-nighters at this stage of the game were shaky at best, which is why I was given back to the project that had lent me to M.E. last year, when a writer WAS necessary), but I was there for a good chunk of time, and I'm in the credits and everything.
So, short version: yes. Writer, so not much programming-fu on my end, but I can answer most common gameplay questions without making an idiot of myself.