I have come up with a hardwired (literally) solution to the issue with fade time deactivation. I'll try to explain as clearly as I can, and apologize ahead of time if I lose anyone along the way.
I'm using the Behringer FCB1010 to control the Operator 192 via MIDI. What I forgot about the 1010, is the ability to use the 2 built in "Switches" to control analog functions of amplifiers, just like a traditional stomp box that controls reverb/clean channel functions, etc. These are simple open/closed circuits, nothing major going on here. Keep this in mind, I'll expand on this in a moment.
I tore apart the 192's housing tonight (*gasp*, the thing is brand new!) and got out the multimeter. After locating the terminals for the FADE time fader, I powered up the unit and set the FADE time to 4 seconds, like I mentioned above. I then took a screwdriver and created a shunt across the terminals, and BLAM!, the fade time dropped to Zero. Remove the screwdriver and the time returned to 4 seconds. See where this is going? Mission accomplished, almost.
I soldered a wire to the terminals, drilled a small hole in the back of the 192's case, and ran the wire out the back. (I'll pick up a 1/4 input jack tomorrow after work, and clean up the mod.) Some quick configuration of the FCB1010 and I had the switch2 control turned back on and assigned to my Audio chase control pedal. I connected a standard 1/4 inch guitar cable to the FCB1010, twisted the leads from my wire hanging out of the 192, and tried it out. IT WORKS!
So, what this allows me to do, is run a chase in AUTO mode, with a nice slow fade between scenes. Say we come to the bridge or guitar solo of the particular song we are jamming, and I can hit the pedal assigned to AUDIO chase mode (at the same time deactivating the slow FADE time) and the scenes become abrupt and perfectly synced with our kick drum. After the fast chase, I tap the AUTO pedal again, the fade time goes back up to 4 seconds, and things are nice and slow once again. The cool thing about this, any scene that I need to be quick, I can assign the footswitch option to on the FCB1010. That way, situations like the start or end of a set, after a song is done, etc... I can pull up a new scene and not have to wait for it to settle in. Everything will be nice and snappy!
Yes, it is a homebrew hack, but in this case, it turns the Operator 192 into exactly what I'm looking for in order to have a controlled intelligent light show, that is run from stage. Just in time for the private party we have booked Saturday night. *WHEW*
Maybe somewhere down the line someone will read this and realize it might work for them, too. If only Elation had programmed a fade time control with midi values... oh well, maybe in the next version!