Nope, No problem with the throttle sticking or hanging up. Actually after cleaning off the MAF, I drove it Saturday and Sunday. I got it to temp both days and gave it every opportunity to "do it's thing" and it didn't......going to clean off the throttle plates at my next opportunity.

 

One other possible cause would be a piece of crap stuck in your egr valve, happened to me!

 

I might be ignorant but sounds to me like a opti-spark dist. might be the problem.....had similar problems with mine, stumbling @ idle etc.