I could be mistaken, but I was under the impression that FremantleMedia owns, among the Carruthers properties, only Press Your Luck and that the rest are held by co-producer Warner Bros. TV (not that the other Carruthers titles are, as obscure as they are, likely to be exploited now or in the future).
As for the subchannel itself: even if a Huntsville station picks it up, it's highly-unlikely-to-impossible that I'll ever get to see it, due to the house location's RF reception problems (in a valley, with a tree-covered hill between us and the towers on Monte Sano; CW affil WHDF has its tower in a different, less-obscured location), the lack of a working antenna, the lack of cable on our street, and Dish (likely for capacity reasons) not carrying subchannels at all. Oh well...