Holy hell, it worked. I just plugged both connectors back in, cleared the code, and brought the car on a WOT run in first gear to second... no issues whatsoever. I'm going to look into this a bit more, I'm genuinely curious as to why that was causing my car to shut off every time it hit between 4-5k RPM.

Thank you very much mdkoh for reporting back with your solution, you just helped me solve three weeks of headache