Yeah, the problem has mutated. I also am considering faulty TPS even though it's not throwing a code.
Overall, it just seems to be running rich. The initial problem seemed like too much fuel for the engine to burn causing it to bog down and now it seems to run rich when it gets hot, kicking my RPMs up. Does that make sense or is my reasoning flawed?
Fuel pump isn't "always on," which seems typical of the chaffed wires (that or completely dead), but may still be the pump but I can't explain why it only happens when hot (but I'm a far cry from a mechanic).
Just for giggles I'm going to detach the extra grounding wire I added. It may just be coincidence that the problem started when I add the cable, but at least I'll be able to rule it out.