I think I can eleminate the sidestand kill switch because:
1. I tested it and it has to go down 25-30% before the engine dies, and I wasn't bouncing enough to do that.
2. WarLlama is right that the instruments don't die when sidestand kills the engine.
Also, the more I think about it the more I'm convinced I didn't kill it myself by poor throttle/clutch work. And with a compression kill the instruments would still be working.
So that leaves and electrical or software problem. A possible hint might be that after the engine kill I do remember the instruments were down except the clock and the milage indicatiors. And during the testing I noticed that when I turn the key off everything goes off right away except the clock and milage indicators stay on for a couple of seconds longer.
What do you think? Might this indicate a problem with the ignition switch as suggested earlier?
Thanks for the input!