IN THE LAND OF GREY AND PINK

I simply adore this record. I am an old-tyme Caravan fan. Thsi is as fun a record to listen to as just about any I know of. My confusion lies in why in the world did Dave Sinclair decide to exit the band after this, his most brilliant work up to that time? I believe Caravan were poised, by virtue of this record, to become international stars if he had stayed in the fold. Unfortunately, his exit seemed to take much of the energy they had built up and they never reached the level of popularity that other prog acts enjoyed.