Sorry to hear about the bonk!
It's all good. I think everyone bonked. I was able to maintain my place, just bled a lot of time in the last 10 miles.
Nutrition can be tricky when you are trying to go fast. Nice job tho! I had another friend that ran the same distance (it was his first 100k) and he said the second time on those out-and-backs was tough. :) I can imagine.