At last we're getting back to business! I thought this "running around" arc is going to take ages and there's no way we'll see BULLET in the near future...
Also, as for the "bottom head decapitation", he should have just reconnect it and let her finish what she started... Now she'll fear of pleasuring him this way, that could develop to a PTSD and considering he's the last person who needs to worry about this kind of damage, that's such a shame...