My rear main seal went out a few months ago.. I found the aftermarket part through DAP. WOW that piece is impressive holding it up next to the oem "seal". How can you go wrong with billet??? haha My mechanic was pretty impressed with it as well. I don't know for certain but assumed my PCV failed creating excess pressure which blew out the seal so I did the PCV too.
Brian
Link for those interested,
https://shopdap.com/rear-main-seal-failure-on-vw-and-audi-2-0t-tsi-engines/