Confirm i toasted my board?
 

https://cimg0.ibsrv.net/gimg/www.mia...74b64c4fc8.jpg
https://cimg1.ibsrv.net/gimg/www.mia...caa769219c.jpg
Is it toasted?

is this toast?

https://cimg5.ibsrv.net/gimg/www.mia...58c87ac595.jpg

No it isn't. Just repair that trace with some wire. You do need to find the cause though or it'll burn out somewhere else.

yeah that's the main 12v trace, so find where you shorted 12v to ground... then repair. you;ll probably have to replace some of the power circuit components.

Could it have shorted due to wiring my ecu harness upside down?

absolutely