coolant in tranny fluid...not good

[chewychevy67]

My radiator must have started to leak at the tranny cooler and now I have coolant in the tranny fluid and oil in the coolant. Obviously not good. Has not driven this way. It warmed up once to move it out of the garage. Tranny doesn't like to move easy which is how I found this out. I can flush the engine but my worry is of my tranny. I drained the oil and it is bright pink. Is the tranny going to need a rebuild? Will it be ok if I have it towed to a garage without running it anymore and have all the fluid flushed or is this just a waste of time, pull it and have it checked out by a pro. It was just rebuilt the summer of 2012. It is a 700r4.