I was thinking about this the other day and it seems to me that some or all of these players might be available when the Pats pick.
Raji I bet is off half of the teams' draft boards for the simple reason that he's already got one strike. That's a nightmarish thing to have to worry about if you're picking the guy in the first round, particularly high in the first round -- and most of the teams that need Raji are high up (Cleveland, Green Bay, Denver, Kansas City). Once he falls past Denver you get a couple of 3-4 teams that are set at the nose (Jets, San Diego) and a bunch of 4-3 teams that you can be sure would rather have Jerry or Tyson Jackson. Seems to me that if Denver or Detroit do not pick Raji with their second picks, he'll fall to the second round.
Likewise Harvin will probably be there. There's no way he comes off the board before Maclin and Crabtree (and probably also Heyward-Bey), which rules out the top-10 teams. The one team in the teens that really could use him more than any other, the Jets, will probably pass. Harvin sounds like an injury risk and a behavior risk both, which makes you think that nobody would take him with their first pick. You'd think the Steelers might take him, but they need OL help so badly, it's hard to imagine them risking him with the last pick. Arizona and the Giants are two other teams that could use him, but they both have just had to deal with a high-maintenance wideout. So he could easily fall.
From what I've read Harvin's behavior issues have a lot to do with him being too amped up -- he at least seems to care about football. If you're the Pats and he's there at 34, how do you pass him up? He might be the most explosive player in the draft. He adds speed to your receiver corps and your backfield and special teams.
Crabtree on the other hand won't make it to New England because even if he falls out of the top 10, he will never make it past the Jets, Bucs and Eagles. Likeiwse I don't see Maualuga falling that far, but then again maybe we don't know the whole story there, what all the red flags are.
The Pats are in an unusual spot. They have a nearly-full roster and tons of high picks. Does that make them more or less likely to gamble on talent like this? It's an interesting question.