The small allowance an exiting crawler is given: a few moments to choose keepsakes and trinkets out of his own inventory, no weapons, as a goodwill gesture.
Offered to Porthus the instant he signs. A new door appears in the room, and the attorney tells him he will have a few moments to pick some pre-collapse items to take with him, and that he is allowed to sift through his current inventory should he want anything from it as well. No weapons, of course - but any interesting trinkets or items of sentiment. 'A goodwill gesture in thanks for all your hard work. Go ahead. Go on now.'
Porthus cannot move. He feels so heavy he lowers his head instead, repeating I will fight, I will fight, I will fight to himself. Everything else a crawler accumulated over nine floors - the gear, the weapons, the loot - stays behind at the door with the rest of his life. That is the whole severance: sentiment, minus anything dangerous.
The exit process's final humiliation dressed as generosity, and the mechanic that strips departing crawlers of everything with combat value.