I had mine replaced today... 2012 Limited @ 24,000 miles. I had the same symptoms as Dingo.
Happened 2 times on me, first time was about a week ago. Driving at 65MPH my Edge just felt super heavy, like the wind was slowing us down, then all of a sudden the wrench warning light came on and it just stopped accelerating. I was able to pull over quick, before doing so my Edge started to shake, I had just filled it up and assumed it was bad gas. It was a Sunday, late in the evening, couldn't call the dealer. So, I shut it off, gave it a few minutes and started back up just fine. Ran great up until two days ago, started doing the same. Wasn't going faster than 15mph and it got all shaky, and the wrench light came on. Called the dealer, and he told me it was the throttle. Told me to shut it off, give it a few seconds to reset everything and to bring it in first thing Monday morning.
Took it in this morning and 3 hours later they called me and said it was ready. They replaced it with a new one, using the reason that the original was in "bad condition" I asked if it had been perhaps due to bad gas, but they said nope. But I'm assuming they have changed out a few since I'm reading that there is a shortage of them in the US and here in Puerto Rico I got the work done pretty quick.