Well I've never flown a jumbo, so it's interesting to find out a different perspective. I would have thought when you're one of the bigger birds in the sky, you're reasonably safe.
I wasn't suggesting it was a jet stream, I was discounting it as it was at F220. I was suggesting it could perhaps have been stronger upper winds and a change in the turn. However from some experience in Asia you don't usually see more than 30 kts of wind below about F250 unless there's something going in. Particular closer to the equator.
Yes I agree with the trippler, the worst encounter I had with wake was one.
The 380 has been an issue a few times crossing its path north south as it heads west.
Anyway as I said it'd be an interesting read.