I dont really understand how Parish is the problem. When he bought the club he made it clear, he didnt intend to own the club long term. His 25% of voting right makes very little difference, the three Americans could out vote him on any issue they want. They seem fairly happy for Parish to remain as chairman and he seems happy enough to be paid to run the club. He's not stuipd, he will advise them on what he believes to be in the clubs best interest, but when it comes to large amounts of investment, like the main stand, they will have the final say.
This has what seems to have happened with Woody Johnson, he has obviously looked at the plans and said this makes no sense, its far too expensive having a concrete structure, lets look at a predominantly steel structure and get the price down. Im guessing that's why they've changed project managers.