Now this may sound as weird as ****, but it does sorta make sense.
Turns out it was the spare tire...
I took the truck to a tire shop, replaced the valve stem on the messed up tire and put it back on the truck, drove out and the hesitation is gone...
I drove it 60 km since then without a single hickup in the same driving conditions as before.
My hypothesis is that the rolling diameter of the spare was different than the other tires and that was throwing traction control into a fit. The light on the dash wasnt flashing but it def felt as if though the power was being cut the way TC would cut power.
My OBD reader showed steady throttle input during the hesitations and the fuel pressure would drop by several hundred PSI.
First hint was when joining the highway this morning and taking a long curve with no snow, ice or moisture had my TC light flash once. Weird.
Anywho, thought i'd report back.