the current replacement part warranty is 1 year, thus I have until February or i have to cough up ANOTHER $2000 (unless they refund the original $2000 i spent last February)
No, you are missing the point. Are you past the 8-year/100k mile extended warranty? Because that should apply even to your replaced MCU. (So if you have a 2016 with 50k miles you have another 4-years/50k of coverage for the eMMC issue.)