RFUS
Anustart
Odds been slashed again to 4/7, QPR remain at 6/1
So from 11/1 to 11/10 to 4/5 to 4/7 in a day
Odds are reactive to bets being placed.
There are plenty of people who see diminishing odds, think it might happen, place a bet and then in turn (en masse) diminish the odds further.
See: Moyes to Villa.