That does seem a tad rich, but if you look at my logs they aren't too far off of that. A few surprising things however is that the afr jumped as high as 12.8 and the trims were pegged at 51 through 4th gear.
Another thing worth note is that the IAT was crazy high, never dropping below 136 the entire run and peaking at 154 by the end. This usually wouldn't be a significant problem other than a decrease in power but at these extreme settings I bet they contributed.
You can also tell in the latter half of 3rd gear and through 4th gear that the ECU was trying to dial itself back, requesting only a few psi higher than stock, while the JB4 was forcing the car to push nearly 28 psi.
The most significant and obvious factor to me, which has been mentioned earlier, is the timing. That poor timing... Correction of up to 4.5 degrees and no more than 4 degrees total after 2nd gear, the worst being never going above zero in 4th gear. The computer can only do so much to save the engine, and it was trying everything it could there, but it looks like it wasn't enough.
From my not very informed perspective it looks like what killed the engine wasn't the 30psi target up to 5000rpm, but rather the fact that the boost didn't decrease like it should have after that and when the ECU was trying to save itself the JB4 being in absolute mode prevented that.
There are still a number of unanswered questions, but I think it is a possibility that your friend intentionally set the settings to this (probably with some false notions about how it works), and isn't willing to admit to his mistake.
In conclusion, I think it's wise to follow the advice on the JB4 page, and always talk to George directly when stacking.