Is he a gulper or a chewer?
If it were my crunch up and chew girl that ate a chicken wing, I wouldn't worry, but if it was the gulper, I would.
If you catch something like this right away, I would feed a few slices of bread wait a few minutes and then induce vomiting. 1Tbs of Hydrogen Peroxide usually does the trick.
The bread acts as a cushion so the sharp bones don't do any damage on the way back up. Or, you could feed the bread and let it go through, hoping for the best.
We went through this a couple of years ago when we left some pork bones within Bree's easy reach. They were so sharp that I'm glad I made her "give them back".