That one album caused a huge schism in Yes itself and their fans. Rick Wakeman left after the supporting tour, complained they were getting too carried away with their own excesses recording a double album consisting of 4 songs.
I have come to like it more over the years than when it first came out, and I never warmed up to "Lamb...:" like AK and others who have it rated so highly.
I also like Tales more today than in the 70's. Its a great album.
In regards to Lamb lies down on broadway-part of my love of this album is that I live in NYC and have traveled down broadway singing half the album. That is why there are no lambs on Broadway my singing scared them back to scotland.