Te 450 question

I have an 08 te450 with about 3000 km. Trouble free so far except....
About 70km into a trailride I restart and the thing is now idling at about 3000rpm. No cable kinking. Got to a tar road and got home.Felt like Im driving one of those toyotas with the sticky gas pedal.
Any ideas please.

Pull off the cover of the throttle body on the rt side to check and make sure the cable cam stop tab is resting on the stop screw. That should tell you if its a mechanical prob in the throttle body. Make sure your throttle cable didn't get snagged and is free moving from the bars down to the throttle body. Other than that maybe its electrical related?

Just a couple things off the top of my head.

Looks like the injector boot got partially blown off after a backfire. Boys at the shop reckon this was common with 570s and 610s with carbs but havent seen it with efi (till now).

Pic's???