Smith saw the field for 71 defensive snaps according to Pro Football Focus. Only Darrelle Revis with 73 snaps saw more action. The irony is that Smith was not really responsible for tight end Fred Davis' big game. Smith is a guy who struggles in coverage, though. Leaving him out there for extended stretches will leave him exposed against teams with good tight ends, a trait that describes many of the opponents the Jets will have to get through if they want to win the AFC.
The bottom line is that the coaching staff seems to continue to view Smith as a full time player. Perhaps the rough day Brodney Pool had in extended work against the Bills played an impact, but then again Smith has been getting burned all year, and still apparently has not used up all of his rope. When people say the coaching staff understands its problems, something like this casts real doubts.