TB, yes throttle body.
TPS is the sensor that sits right next to the IAC. (Throttle Position Sensor)
There is a TB Cleaner that is safe to use with vehicles equiped with an O2 sensor.
I understand you didn't disconnect anything else but follow every vaccum line in the area and make sure they are connected to something. I've hit the vac line on the intake manifold by mistake a couple times, disconnecting it and getting a high idle from it.
Lastly is is possible that you cleaned up the plate in the TB but gummed up everything under it with crap dripping and you could have plugged up the IAC hole or fried the TPS.
Wait for someone else's opinion because I'm not an expert by any means but after checking the vac lines again I'd take the TB off comepletely, clean it really well, checking where the IAC goes and then put everything back together. Remember you have to adjust the TPS with either a scanner or a multimeter. If you run a search on this forum there's a couple places the directions are described or somebody might be able to link it for you.
I'll see if I can get you a picture of the TPS.