200-4R transmission troubles.

[The Stickman]

Ok yesterday I was driving the wagon and it was pretty warm. I was going up a fairly steep incline and look out my rear view mirror and see a cloud of smoke. I pull over and see a trail of tranny fluid and a puddle of it too. Now the car was running fine. I had no idea anything was wrong till I saw the smoke. So I didn't look at it today because of a migraine attack probably broght on by the stress of a broken trans. But here are my thoughts on possible problems. Could it have simply gotten too hot and puked the fluid out? Could the torque converter have broken and not given any drivability signs? Maybe a cracked housing? Any opinions would be welcomed.