UPDATE: Boy that was quick... just got a call from the fellow I am working with in Houston. He has found the actual signal ON THE AIR on 145.930 MHz in the Houston area and it is currently transmitting with the content coming from the very UHF repeater I identified. Coincidentally he is the person responsible for that very same repeater. SO, the interfering signal has been generally located, now it is a matter of narrowing it down and figuring out where it is coming from. Possibly a ham has his dual band radio set to cross band repeat, etc.
Thanks everyone... I guess there is a line on it and hopefully it will be found. 73, Kevin N4UFO