Well, the "egg" will open if you get close enough to threaten it... It'll open up and shoot you full of holes... or tear you limb from limb with it's tentacles.  I don't think you could "pick" it open or closed...<br/><br/>If you're willing to sacrifice the tech priests, then go in, stick shaped charge or two on the egg, and blow it.  Probably at least half will survive.<br/><br/>Otherwise, well... Arkhah's power axe can probably kill the AI if he is able to get in, oh, half a dozen good swings without dying... so you could go in, place the shaped charges, and THREATEN to blow the egg... which would certainly be a really good distraction for him.<br/><br/>And you could always just blow it up anyway if everything else failed... and 113 would otherwise defeat you.<br/><br/>Speaking of a Sister of Battle... there IS one in the room.  You might want to hook up with her group for the added support.  AND she might have the know-how to use the explosives.