I JUST got the EJ25D out of my '99 Legacy SUS. Because the car has to roll back out of the garage so I can finish up the EJ22E on the stand and bring it to the front ( single car garage ), I lowered the trans to the point that I could put the bolt thru the pitch stopper, and wired the torque converter in tight with some mechanics wire thru some bellhousing bolt holes. For whatever reason I grabbed a tire and spun it and it was not locked in park.. Could Jacking the trans pull it out of park? When I was jacking the engine popped a little but I thought it was just my lift chain, just hoping I did not break the shift linkage. I didn't think about the shift linkage when I was working on it

If you have the front tires off the gound one will sping the other won't.  Differential.

 

If you have the TC pushed full back and it hits the starter gear, that's normal.  I've never seen it lock up a trans.

 

When you want to roll it all 4 on the ground, you will have to shift it into N.

If you paid attention when the wheels were off the ground you would see the wheel on the other side of the car spinning the opposite direction. This is normal action for an open differential. The output of the transmission is still locked in park, but the gears of the differential allow the wheels to spin because there is no mechanism to lock the actual axles.

Shift into Neutral and it will roll out.

And the lightbulb just clicked on. Guess that was a duh moment.. I'm used to having 1 tire on the ground, grabbing the other and feeling it locked against the park pawl.  It's rare that I have an entire front end in the air. I had a 1965 Rambler fall on me in 2008 while doing E brake cables ( only suffered a cracked rib ) so I tend to not like being under vehicles too often.