The two singles with Nigel Watson are noted here as being recorded January 1971 (if I'm reading it right). Not sure if that's accurate. That seems to me after the tour he was called in for?
http://discog.fleetwoodmac.net/discog.php?pid=986
http://discog.fleetwoodmac.net/discog.php?pid=987
I like End Of The Game quite a bit but then I was into soundtrack and background/lounge/exotica type albums sometimes. It's very out there but evocative. A more traditional album would no doubt have restored his standing with the critics who hated the Game LP.