I too noticed that... Perhaps a large proprietary trading desk saw the opportunity here to make some fast $$$...??? Load up on cheap options, then start buying shares til the cows come home...and the remaining shorts (and call-sellers) get squeezed ala AIG...???
GS bought about 4,000,000 shares of IDCC back around late 2006 to spring 2007 timeframe...then dumped all their shares (and shorted...???) just before the SEC changed all the rules (Uptick primarily) in July 2007...