But Alorkin, Snape would say something like that as his master IS getting more and more insane as time goes on. And saying that would flatter Moldisnorts ego enough that he wouldn't torture Snape. As a side note, it'd be really poetic if Harry could use the nanites the same way on Moldysnorts as Dumblydork. Leave both alive but as squibs. Then give them joint living quarters and let them kill each other or argue to their hearts content. What a fitting end to both of them.