Martinez said goodbye to the locker room moments after he dropped the title to Jeff Cobb. Basically, Martinez opted not to sign a new contract so he could see which companies might be interested in talking with him.
His contract expired prior to “All In” pay-per-view but he stuck around a little longer so he could drop the title on the way out. He is 36 years old so his window for a WWE run is closing. I would not be surprised if he got the call for NXT.