I don't think there were any leaks before Sept 30.  First of all, RVX itself was not informed of any results...all the results would be with the CRO.  Second, if you look at the price action of RVX after April (even before ANYONE could know anything), the market action was increasingly bearish.  The wisdom of crowds figured out that there was bad news coming.

After Sept 30, the on balance volume has been extremely bullish...and the OBV as of close today suggests a share price consistent with $2.40 or so.  Unlike pre Sept 30, this time around there must have been leaks.  Just reading the data bandied about in this forum by various posters (30% RRR comes to mind, Crestor/Lipitor, etc.), suggests people know something about the data.

As for renewed shorting, I would highly doubt it...and would not recommend it.  The price/volume action is showing amazing momentum...best not to stand in the way of a freight train.