I've brought it and would say its worth a read. It's a difficult one to comment on unless you have read it because we all have disagreements, and I agree these should be kept within the referring community.
I think some of the criticism, towards some officials, should have been kept away from the book, however, there does appear to be concerns with how things are managed in the select group.
He comments on how Graham Poll would form clicks within the group and often get drunk on trips away, yet mangement appeared to fear him and let him get away with things. Graham and Mark clearly didn't get on.
Also he tells the story of when he recovered from his cancer, his manager of the PGMOL, Mike Riley, asked him to retire. When he said no he was told he must pass the fitness test. All the referees were there to support Mark with Mike Riley's assistant going along too. When he passed the test all the referees ran over to Mark, who was now in agony to congratulate him. Lots of tears were shed as everyone was so pleased for Mark, Yet Mike Riley's assistant walked off in disaprovement.
Riley was clearly not happy and would often put him on the football league for four weeks or give him fourth offical games even though his scores were in the top 3 refs in the county. Riley and others clearly didn't want Him around.
Harsh for a guy who has been through what he has. There are more stories like this, so is an interesting read. Should also note how he wasn't give his (large) payment when retirng unlike other referees because of this book, so he clearly isn't doing to make loads of money.