In many cases the term "spoofed" is probably used loosely to mean "they stole our wifi". I understand that that's not what the press release claimed, but such excuses still benefit filesharers because all of the industry's lawsuits heretofore have been based on matching IP address to registered ISP user and holding that user accountable for the activity that occurred on their network. Making this excuse, then, only seems to serve the little people that are next on their "to sue" list.