Discontinued or not, I don't think it's fair to blame Motosport for not having their computer system automatically linked up with Amazon's. I tried to order from Motosport directly and could not because they ran out. So then I tried on Amazon and the site said they usually ship in X-X many days (not that they were in stock and ready to ship). That was on Sunday, on Monday, when everyone goes back to work they sent out the emails and cancelled orders. Not everyone is managing their company's Amazon account on Sunday afternoon so they can pull a product as soon at is sells out on their home webpage.
Just because Michelin may not be discontinuing the PR2 doesn't mean the distributor Motosport buys from isn't going to stop carrying them. Personally, I'm not going to start wearing panties and get them all in a wad over this.