I agree with all your points above and I take this report with a healthy douse of skepticism as I don't think they really found a solution to the problem nor did they manage to really identify the problem (not their fault given the lack of clear cut evidence).
One note is Bora was running pretty thin control line in his traveler-6mm. Personally I run 8mm, which I think would have fully avoided the issue IF it was the traveler line. Also note the 2:1 system on the traveler and the very beefy 11:1 or 12:1 mainsheet system (that isn't a stock part I can find anywhere)-this indicates that the loads are very high, as I would expect on a foiler with F18 sized main. Gripping the lines properly is clearly a real issue, and another reason to go with at least 7mm line in the system where you can get away with it.
