Looking back over the data log, I think I really was at zero throttle during those times. The data log is just from a quick trip around the block. I'm on the throttle during the "straights" and off it for turns and stop signs. The TPS readings make sense compared to the MAP and RPM data.
I did (visually) check the TPS wiring. I'd hate to go buy a new TPS unless I'm pretty sure it is bad.