Well, the wall I was drilling was the one before the cargo, also, when the ripley was destroyed, i slipped inside core and the emp grenade tore off my right hand, I did not stay there, I fled to the mining station. Also, with mesons you can see the layout inside the core. When the delta code was called and people were screaming on radio about robots attacking them and carps from the holodeck I was just finishing to smelt the plasma at the outpost. And since Aaron have a great distrust about artificial intelligence beings he would suspect that the AI, which was showing signs of not working properly, could be behind it. But, I agree it was a rash action, but since it was code delta it would mean that the station was going to explode. And I think you can destroy the exosuit using the console at R&D.