It looks like your last comment was 45 days ago. I liked checking your comment page every now and then. I could always find some interesting insights. Will you ever comment again as "PG"?
Well, you've got me there... Unless OP used "PG" to refer to Paul Graham's initials and not the username. In that case the only way PG could comment not as PG would be to claim to be someone else, in which case the answer wouldn't be true.
That may depend on whether or not the double-quotes are delimiters here or actually part of the name. He could sign his comment as "PG" or PG accordingly.
I presume he's staying out of the way for a while to let Sam push his personal brand a little more. Hard for him to develop as the leader with PG hanging around.
