727 Auto tranny question

I've got a '70 Duster, with a 727 Auto trans, with a B&M Pro Stick shifter attached to it. Now, yesterday morning I went to go to work, and the car shifter cable snapped on the transmission nob(where it hooks up to under the car).

Well I fixed that, the cable is all connected, but the trans won't shift now, the stick shifts fine, and has resistance, and it was perfectly fine up until yesterday morning.

It's almost like it's stuck in neutral? and I try moving the tab by hand, and it won't budge. I'm pretty sure it was just over shifted in park or something.

Does anyone have any ideas on how to maybe fix it?