Sounds like you're riding well these days, even if your bike wasn't!
Oh no! As soon as I read this, I worried that my low tire pressure advice was to blame, but then your enviable Phatness (yes, it's a good thing, enviable) gives you a decent tire pressure via the calculation. Bummer that it took you out of the competitive action but a super cool little victory on the things you rode. You rode that steep rock roll-off? Sweet! I saw a photo of some of the features on 7th Secret, it looks awesome!
Not entirely sure that I had the full 30 psi in each tire to be honest. I was a little slack in my race prep, forgetting CO2 as well. Sh!t happens. As for that roll-off, I bailed on that one but did one on Seventh Secret that was just as big and steep...not that I had a choice in the line I had!