there will be no rollback or split. in truth there is realy no need too most shares are spoken for. nor will frank bail early in the game either. plus qbid could go any where in price we have the dot coms that prove that. it could go to unrealistic prices like 13.50. due to people going nuts buying up every thing in sight creating a magor demand and blowing out the roof. but your comparison to SIRI is Spot on. they both are close models an just may take the same path.
as for Frank. If he anything he pull a "Chad Gifford" head of fleet manuver. Chad manuverd fleet to be in a prime buyout position then he sold out and took a golden parachute. hes made over 42 mill by selling out "twice". but before you sell out the you got to be in the right position.
Viacom may be the buyer or hell NBC for that matter. but its a wait and see game.