alright, I got the SOB out! Using a pickle fork and a 3lbs hammer. I only had one pickle fork, so I had to take turns wedging it in the front side and back side evenly. It was quite the fight! There was a lot of corrosion on the diff and oil pan that I sanded off.
My front diff leak is now fixed and I hope the seal that I used fixes it for good. The black gunk build up from the pictures below is exactly where the leak was coming from. I scraped it off, lightly sanded around, and used black gasket maker.