Hahha, thanks for the sympathy guys. I had a suspicion something was up with the truck (for a while now). I'm taking it all in stride, and was cracking up when I made the connection about the irony of the situation. LOL
Not 100% sure what's going on yet. I have my opinions, my mechanic has his opinions... Right now it's at Pep Boys (weekend service offerings

), they have their opinions. I fully disagree with Pep Boys' opinion, and I'm sure my mechanic will too.
Essentially, severe power loss resulting in the possibility of a stall. I personally think it's fuel system related (common on this model truck), my mechanic thinks it's exhaust system related... Both of those options have checked out 100%. Fuel pressure is spot on (fuel pump OK), and doesn't leak down after power off (injector poppets/spider OK). Exhaust pressure is in-spec (catalytic converter OK). My mechanic was also suspecting an issue with the cam sensor (computer finally threw a code). Today, the computer was throwing an O2 sensor code instead of the cam sensor one. Pep Boys is running that route with it. It could make sense, as it does happen in hotter weather, and when the truck has been running for a while. It also feels like a loss of fuel pressure, which would be a result of the O2 sensor making things run too lean.
We'll see, the O2 sensor is definitely due for replacement via mileage, so it's not necessarily wasted money. I've also definitely noticed a difference in fuel economy of-late, again, another symptom of O2 sensor issues.
I might also grab a new throttle position sensor to throw on there tomorrow.