Bright side here: turns out the problem was a plugged drain in the furnace. Water backed up, which in turn extinguished the flame. Wife got the drain cleaned out and now we have heat. And all is well with the world! Thanks for all the good wishes and positive thoughts ...
Oh, yeah, the business trip went well. Even had the client (his idea) take me around on a golf cart so I didn't have to walk the entire perimeter of his 15-acre property. Pretty big deal, and I still got plenty of exercise.
Final advice: if you can find yourself a bottle or glass of Great Lakes Brewery Christmas Ale, drink it! But only one, lest you find yourself flat on your back for reasons unrelated to your recent THR.