Before the transmission gets condemned, you should get the vehicle to a shop that has a transmission fluid flushing machine to flush out the entire transmission, and torque converter.
Get all the contaminated fluid out of the entire system.
Then run it for a bit with that fresh fluid, and then do another complete flush.
It's gonna get expensive with all that fluid, but lots cheaper than pulling a trans and converter, and opening up a transmission.
Sorry for your bad luck, but unfortunately, Murphy came and bit you in the a$$.