KIKK was still on the air just before midnight on Tuesday. Wednesday evening I found it on the air during checks at 8pm and 10pm, but it was gone at 11:30pm. Someone finally bothered to check the transmitter monitor, or someone brought their attention to the problem.
One thing I did notice: the KIKK nighttime signal is actually quite good, even at my Cy-Fair location. Little grief from WSM while driving home. If they were ever able to get night authorization with a directional null towards Nashville, the coverage wouldn't be half bad.