Have you posted your most current DSDT file somewhere? Let me take a look. Both my MOBOs woke on keyboard or mouse a GA-EP35-DS4 and GA-EP45-UD3P.

Update:
I grabbed your DSDT from an earlier post. Try the attached DSDT. I modified the EHCI devices. Also you should have your USB mouse and keyboard connected directly to the motherboard and not any kind of hub? If you're using Slice's IOUSBFamily.kext I would try reverting back to the vanilla. Let me know if this helps.

DSDT.dsl.zip

Update #2:
Retract the last post. It seems you might have tried the approach I detail above.