yeah i think sony will make some special agreement with organisations that use ps3 linux for Serious Business. like this one.I'll bet if it came right down to it, Sony could provide them with 'counter' firmware to re-install Other OS and the original firmware. I doubt Sony would want to tangle with the US Gov. in a battle over who's got the software rights to the PS3's owned by the Military.
then again, it they are at sony's mercy now. which means they definitely asked for it by relying on a proprietary platform that has no other provider.