Yup, my black anodized seatpost on my Speed P8 took a similar hit the first time I folded is all the way.
I cleaned out the inside of the seat tube and the outside of the seat post with a rag and something like 409. I then put a little grease on the seat tube.
No more scratching, but now my seat was sinking a few inches a ride, no matter how tight I cranked the quick release. More 409 to remove the grease from the post and tube.
Then all was good.