[spdbrake]

It's doable... if the you disconnect the other shock as well so you won't be fighting the sway bar.
You can slip a jack handle in the pin drive hub and step on it for leverage.

If it's still too tough. Loosen all 4 swing arm bolts one turn (Upper inbd/outbd and Lower inbd/outbd) so you won't be fighting the bushings (rubber are worse than Poly) that will resist rotation.