Send Sxth these so he knows whats going on, also, you peaked at 24lbs of boost, not 27.5, that 27.5 is what was being requested, not delivered. The second row of numbers is what is actually delivered. Its still off though and you are still getting pretty bad timing pull, even with an e30ish mix. How you went into map8 though I have no idea.
On the bright side, you don't have to worry about blowing anything up, as your IGN1 advance is so low that even with 27lbs of boost, you're not gonna do any harm. Maybe if you did 100 more pulls like this, something would happen, but just send Sxth the logs and they will handle it. Nathan is Very very good at what he does, but every car reacts different. My first tune actually did something very similar and it turns out I was mistakenly given an e50 tune.