Not unusual when Giggs has been playing as many games as he has and is getting on a bit - he is 37, fgs. As brilliant as he was against Chelsea in the week, it isn't unusual to leave him out at the weekend at all.
Not that I think he wouldn't be involved with Imogen Thomas though - he started seeing his present wife whilst cheating on his girlfriend in secret, him, the ex gf and the Beckhams were all mates so there was a big hoo-hah when it came out that he'd been seeing someone else. It all came out because she got pregnant, as I recall. He used to be well known for a spot of dv with old girlfriends - an amazing footballer, but definitely not whiter than white.