errr....ummm...thought about it, park wouldn't matter. sorry, vodka makes me dumb

. I have pulled the auto tranny without the motor and it was a lot of work. I know you're going the other way around, and it is
possible with both 5s and 1mz, but it only takes about 25 more minutes to pull it with the trans attached and involves a lot less swearing when both come out together. Honestly, using a lift would be the easiest way to go-unhook everything, set jackstands out for the front subframe, set car down on them, unbolt subframe, lift car out of the way, hoist engine/trans off of subframe, unbolt the two and so forth...
If a rod were jammed against the block, it would have some movement. You might have luck pulling the pan off and removing the broken rod, but you probably should just take the hood off and pull the engine/trans as a pair. It's not that hard, you just need a lot of patience to unbolt and disconnect everything.