Don't Panic!
Just had the same thing happen to me...very annoying!
What happened to you (and to me) was that the lower studs pulled the Torque converter out slightly...about half an inch...and the inner shaft came allong with it.
Here's the fix: If you can't push on the Torque converter, and set it back...then take the torque converter off. You'll see a splined shaft, with an inner splined shaft. The inner splined shaft has to be loose, and go back in about a half an inch. If you can't push it in (I couldn't push mine in) it's hammer time.
I whacked the ************ out of mine, while turning it, with a three pound machinist's hammer. It got loose, and the TC fit and the engine fit, and the car runs fine.
And that's my story, and I'm sticking to it.
Stewart