There's a bit of it here
http://www.lordsofmetal.nl/showinterview.php?id=2394
It's a really long article but he kinda talks about being bored with their more rock oriented records, calling it "cool rock".
If I search around a bit, I could probably find the other interview I read where they said Pink was a mistake and was a joke record (which I agree with), though they kinda touch on it in that article.