I don't know. I think both of us would have been disappointed with the results.

[He takes a moment to get his thoughts in order before continuing. It's not 'talking someone off a ledge' delicate, but Jimmy doesn't want to lose Sherlock as a friend or see Sherlock get punished for something he partially did on Jimmy's behalf.]

It's.... I don't want to see anyone get hurt because of me. Not on my behalf, not to protect me, nobody gets hurt because of me. Not again. And what would have happened if it didn't work? She would come down on you like the wrath of God, and she'd probably be impressed with your ingenuity and dedication as she turned you back into a lizard and left you there for the rest of your contract.