Listen, the ammonia was a good joke, but if Ford's not going to stop him he actually gets nothing out of messing with what little trust he's already managed to eke out. It's not a hard judgement call even with completely cold logic.

"DOESN'T MATTER! THE IMPORTANT PART IS THAT IT'S SOMETHING MAGICALLY USELESS AND WILL MESS UP SOMEONE'S CIRCLE! WHAT ABOUT INK? YOU'D GET A KICK OUT OF THAT, I BET."