Cutting radio support bracket

I don't have a radio in my car, just an amp running directly off my mp3 player. I want to move the ECU to behind the console where the radio was, as it's currently on the floor behind the console. There is a relay attached to the rear radio bracket, what does it do? I haven't pulled the console out yet, I need to cut the mounting ears off the ECU to slide it in behind the radio block-off plate first. I can't see a mounting screw or anything for the relay.

I want to cut out that rear piece to make it fit. Will that cause any structural problems with the console? If it will I suppose I can just trim it, but I'd like a little more room for the extra wiring in there.