Yes, so it's "Severus, you poor idiot" rather than fuming! The experience is rough on his namesake, though -- Harry had never anticipated that problem.
Sequel? I don't know. It's a fascinating situation, and I do have ideas as to how it would develop, but I have two WIPs going (the porny and the plotty) and a few other projects in the works. Both of the WIPs are sequels, though, so I do have a habit of writing them. ;-)