Guy has given up 1 run in almost 9 innings and the Rays are trying to pitch this as a move to keep him fresh for the playoffs but what it is is a penny-pinching thing that will allow them to pay him less in a few years. Tampa needs this guy in the rotation if they want to contend.
Wrong. First, sending him to AAA won't keep him fresh, as he'll be starting there. Second, there's no penny-pinching benefits to them sending him down, unless of course you think they're doing it to save roughly 100K/Month. His salary at in the bigs would be 750k, in the minors, 150k. No matter what happens as far as service time this year, he won't be eligible for free-agency until 2014 at the earliest regardless of how long they keep him down right now.
They're sending him down because he's a two-pitch pitcher right now - he has almost no feel or command for a change-up. That won't be enough at the top level, sorry. There's also the case of two guys fighting for the fifth spot that have no options left. This means that if they elect to keep Price and send one of them down they'll run the risk of losing them because they'd have to pass through waivers before they could be assigned to a minor league team. The chances that no team would claim either one of them are about 1/1000.
To your point that they need him to contend, I find it laughable to think that the reigning AL champs (who only got better in the off-season) are relying on the arm of a 23 year old with almost no big league experience to get back there. He needs time in the minors to get his pitch counts up and just learn. One run in around nine spring innings (I assume you're familiar with the term "small sample size," and the fact that much of his outs have been against non big-leaguers) does not an ace make.
Nobody should have been drafting him with the hopes that he'd anchor a fantasy staff. He's a baby. Give him time.