2000 Explorer V8 AWD Transmission Locked in first gear

[dumbmechanic]

Backed the truck out of the garage then put into gear to move back into the garage. Wouldn't go forward. Thought that it was spinning the wheels on the ice. Checked outside and found rubber line from transmission to the oil cooler had failed and oil pumped everywhere.
Repaired oil line and refilled with oil. Transmission now will go forward in neutral and engine labors in reverse as if emergence brake is on.
I am dumb enough to repair this myself. Is it a major task and will I need special tooling?

 

[FR-425]

After you refill you will need to run it for quite awhile to get the air out of the entire system. (just sitting do not drive it yet)

Keep checking and adding as necessary.

Cycle the shifter through all the gears several times as you go.

Check again, run it neutral for awhile, check it again. You get the idea.

 

[dumbmechanic]

I believe that I have done those things and the transmission insists that it is locked in first gear. Don't have the courage to take it out and see if it will shift into second.
I really appreciate your quick reply.