The choice is simple. Either mtgox does this, or they can expect a "dotcom style" type of raid with extermination of their entire business, possible extradition to the US on very serious charges, terror/cp shaming in media etc. Technically, they still risk this, but at least they play it safer than those who don't (e.g liberty reserve).

Is it right? No. Want to blame someone? Blame the US. Or better yet: blame the pathetic countries who surrender all their rights to satisfy US.