A local on TDI Club heard some ticking, then two "pops", it died. Towed it after some attempts to re-start it, then tried to re-start it a few more times. I dropped in to diagnose and after about 15 minutes I moved the crank back slightly to align TDC and the timing belt went slack then I pulled it off... without touching the tensioner
My theory is that #1 intake lifter shredded itself, ticked, popped, then the TB tensioner failed
Then slipped... and munched every valve.
If anyone is interested, I can take some pics of it as the head comes out and the carnage it left behind. Depending on the carnage, this car may get rebuilt, may get parted.