Ellis/Clancy is our run-down tandem, and Ellis/Hargrove is our pass-down tandem. Clancy being hurt is hurting us though. We really could use him back, for the Giants run-game especially.
As far as responsibilities go, it can and does shift for GW.
I think in the internet world, too much is made of the NT/3Tech distinction. And in GW scheme, I think it means even less.
It probably has more to do with Ellis just getting more snaps under his belt. He missed games last season, and didn't look that explosive when he came back.
He played well yesterday, but to me, he's been playing pretty well all season. It seems like another incremental improvement from his past performances. GW may have just given all the linemen more freedom to run wild, since everyone seemed to play pretty well yesterday.