Note
I believe BJ could have cleared.
I looked at the time I spent doing 40-49-42-53, which was 12 minutes. BJ took 7 minutes to get from 53-40, which means +5 minutes to swing the loop - he had 5:30 to spare going off of his LiveLox total time.
The one factor I have not accounted for is that I hit that section early and was fresh, flying from 42 to the trail, whereas BJ was late into his race and mentioned he was hitting a wall, so perhaps expected pace was not the same. But if you have him get 71 on the first pass, that's enough to cover some of that, I figure. Also, 53-42 is harder than 42-53, which might add a little time.
Either way, impressive run by him!