No, Beloki did not fall because his tire came off the rim. The announcers got it wrong, just like they do a lot of other things. I watched the tape numerous times. Bike is sitting there with a bent rim and tire intact. He slid, the tire hooked up and he high sided, if the tire had come off he would have low sided. Take it from someone who's done both at high rates of speed.

Rolling a tubular would be highly unlikely using the Extreme tape (you really have to work to get the tire broken loose), and mostly happened because of crappy glue jobs. I blew out a POS tubular because of a valve stem failure (20 y/o El Cheapo tire) and it didn't roll. In fact I rode it back, flat, for 15 miles at 15 MPH, even with it being glued "Old School".