Ryan has arguably gotten slower at the marathon since distancing himself from the track. This is why he did okay at Boston, because he didn't have to go at fast, so it was a bit hidden. All of those tempos were good back when he still had speed in his legs, but he's been beating a dead horse with all those tempos and needs to go back to the drawing board for some better adaptive training (woot, Hudson).
While I'd love to see an American nab an Italian coach and go train with the Kenyans (Renato, give him a call!), Hall is as American as apple pie and I don't see him doing that.
Whoever said Larsen has a good chance of being proven correct. Meb has done quite well with Larsen. Also, you have to see that as a competitive move that bodes well, because Larsen knows how to get medals when it matters.
It's interesting that he went to "Central America." Didn't Salazar and Ritz take a trip south to do some training? John Cook even has people who go down there (just saying, I know that'd never happen). He might say he's on vacation or getting a break to be with God and pray, but don't be surprised if he was down there meeting with people, even if that just meant being on the phone where others weren't around to hear him negotiating.
He's a good kid and this change bodes well for him. No matter who he goes with, he has a decent shot of improving, because just the fact that he's changing it up shows that he's ready to do some different kinds of workouts. What will we see in the spring? A marathon or some shorter distance races?