I think a lot of the rep that Shockey got was being in NY with the media whores up there. Down in NOLA things are a bit less irritating for the players. Not to mention that Payton will just sit his butt if he gets out of line. Shockey is not "the man" on this team, there are two other TE's that can get the job done, and with the rest of the receiving corps the Saints have on the field it won't hurt them to let Jeremy sit on the bench and stew.
I think the guy wants to play, he knows the lay of the land in NOLA, so he'll behave himself.