You see that slush pool has died, so apparently there was no hope to save it. So the last thing a dying man could do was to try to at least find out why&how? this happens. There were some suspicions around that Eleuthria had deals with attackers. I think this step was - of course - not nice, but logical.

And also - btcguild was not harmed, by doing this! It only revealed that attackers like btcguild and will not attack.