It seems to have just disappeared, though if they really wanted to air shows in Spanish there's always the alternate audio tracks on any of their channels.
I think this is a good idea. It swaps out a subchannel the vast majority of viewers can't use for one that many more can. I think someone ought to look at MHz Worldview and FNX on KUEN. (Does The U control programming on KUEN or do they just provide facilities?)