It's a bit of a beast to get at... I pulled "all" the liner screws and even then had to flex the liner pretty good to get at that rascal. The pictures above are very helpful although it makes it look a little more accessible than it is in reality

 

got it off today, remove all screws from within wheel well, remove all the screws under the passenger door, and 2 from the front corner. bend liner all the way back over the disc brake. then 3 8mm hex screws from the actual ecu. 1 is in the back, and pretty much have to use touch to locate. pull down on black bracket, unplug 3 harnesses, pull down on ecu.
thanks for all the help