Given that "vouch" still goes through the manual process (it doesn't auto-revive hellbanned accounts, but instead flags them for the moderators to review) I think the most likely outcome is that a few more of Terry's comments will be made visible, but his account as a whole will still be restricted. After all, the moderators are well aware of who Terry is and his general patterns of behavior on his various accounts, but they might not always notice when he makes a comment that deserves to be revived.