I would like you to post to see if it stays there. Seems like after the green airs out a little the slope will come back.
On the reverse, I know a course that regraded a green from 7 degrees to 4 degrees. The super did it in house without an architect. The members screamed because it wasn't the same. They tried to build it up without success so now they are going to rebuild it again, this time with an architect and hopefully some professional shapers.