It's odd that it's only effecting things with a power source. Then again, sometimes I only have the barest of realizations of what the after effects of my power will be.

The fact that you've been storing it in your system since New York means it's probably been corrupting the rest of the power you've been holding onto. Best guess, anyway.

I'd suggest going to the quarry at the Mansion and, well, discharging everything. I can't be certain how much you still have or how much got corrupted so anything in your system needs to go.