Like the whole thing was a show to prove his pro-Townness. And of course I wouldn't be in on this, since I am a Townie. But like I said before, I think it's probably that Isaac was trying to use his questions to gather some sort of useful information, and was hoping he'd catching somebody tripping up. A slip like that could mean a couple things which would be good for scum:

1. Someone's lying and is a rival faction of scum.
2. Someone's lying and is a Role.
3. Someone just made a mistake, and now we can LYNCH THEM.

So given these scenarios, Evil Isaac would plausibly be actually angry with me for reminding people to watch for continuity errors. I think it's unlikely he would have created that whole scheme without having some sort of purpose other than to appear pro-Town, especially since it did meet with some opposition. So I think he genuinely was angry that I was messing with his plans.

However, I never like to assume that I know something is 100% true, and thus the "probably honest" comment.