Well, problem solved, no thanks to my boneheadedness.
It was bugging me today, so on my way to get take-out for lunch, I first cleared the code, then drove to the diner. Got there, got my lunch, got back in and started the car, and the CEL was back. Got back to the parking lot at work, popped the engine cowling thingy and started tracing stuff again, then realized what I thought was the IAT was not. I found this out because as I was checking connections, I found one that was not completely locked in. Once I saw the IAT, it was obvious. I pressed the plug all the way down, cleared the code, and the CEL hasn't come back after several starts and stops of the engine.
Guess I'll know for sure in the next couple of days, but as of now, looks like all is well.
Thanks again for all the help everyone!