If it's just a matter of the EXE having a different name now, it seems that a new Origin version of the trainer would be dirt-easy to make. Regardless, the title is still listed as active, so...
(Yes, I submitted a ticket through the system too. Just making conversation here. )
So once again, I installed Mass Effect 2, from scratch, from 2010, on STEAM.
I downloaded the trainer from here:
www.cheathappens.com/trn.asp?trnID=27882
ran trainer with admin privledges
ran game
F1 at main menu
all options work..
20 minutes wasted
If crash on F1, make sure you have your antivirus temporarily off or that you put the trainer where it is not blocked by the antivirus, etc.
best,
Cal