It's been tough to tell how bad the S play is because of the mess in front of them a lot of the time. We've seen a couple of blown coverages, and we've seen Heath almost snap and ACL a couple of times now overrunning a play to make a tackle in space, but I agree that he's been disappointing, but not nearly the problem he's been made out to be.
Jones has been solid, as far as I can tell, and good when he's got man coverage responsibilities. The DEN game was bad, but IIRC, he had a soft tissue injury (groin?) that game that was probably part of the deal for him there. But the teams that ate us alive were doing it mostly by taking advantage of the underneath coverage holes that the LBs had been giving up.
I agree with you on Awuzie, too. I think they like him at S and like him for this year, if he can get on the field. I haven't noticed Lee being anything but his usual fantastic self (other than the blown tackles in DEN, but that game I'm considering a mulligan for everybody). I'll have to go back and pay more attention next time around.