Again,... thank you to everyone that responded. I very much respect the knowledge here!
I wanted to report that this worked... and I didn't even have to flip the jack or try to disrupt the traces on the board. I think this works because the PS2 info coming in probably doesn't resemble sketch language,.. so the chip ignores it and let's me use this jack for another purpose.
Now that I have adapted the PS2 keyboard's plug... when plugged in it now receives it's power through this jack... and it's data is transferred to digital pins 4 and 5 because of the wires I added. The only hitch is that I have to hit the reset button after power up to make it work (I''m going to wire a remote push button switch up for that). See picture for how the wires are soldered (I'm attaching one, hopefully it comes through)...
