I've been using this site since first day it started! Dealt with tons of people. There is 2 things I'm sure has happened either:
1 you have swapped boards as that deffo is that melted pin was deffo not there when I checked it the day before as you said you had problems with your pin.
2 you have plugged the ecu into your car and it's melted the pin.

It's weird as you have stated your old ecru suffered with this pin problem?

I tested this ecu the same day I posted it as my car was in the unit at the time.
Tabetha on here can confirm also that car was drove to the unit with that ecu on my car.

Something is fishy here