Likely because options holders have also run out of patience and aren't willing to wait, yet again, for "expectations" to materialize. I take it as a "give me my money back" demand, which doesn't bode well for the latest carrot dangling around OFC. 

I'd normally be insulted by this repricing, but really is anyone surprised at this stage? More of the same sterling financial and IR outperformance we've come to expect.