Update: it has made the transition from "dragger" to "roller." I disconnected the lines from the Eaton pumps to the hub motors and connected them in loops with crow's foot connectors. I realize these aren't rated for hydraulic system pressures but it's just temporary so it can be rolled around. 3 out of 4 tires were off the rim so I had to employ ye olde "spray something explosive inside and then explode it" trick times 3. After that I was able to easily roll it from the front of my shop where it was negatively impacting the value of my favorite neighbors' house that he's trying to sell, and into my tractor port where I can work on it out of the soul-sucking Texas sun.
Good news:
I only lost half of one eyebrow.
The hub motors spun very freely once suction/discharge hoses were looped.
Bad news:
There was entrained water in the fluid found in the lines of both motors.
Mediocre news:
The watery fluid didn't seem entirely rusty.