I'm trying to think about other instances where an unrestricted free agent has signed a big dollar, big term contract, struggled mightily, but eventually returned to previously displayed form. Guys like Penner, Gomez, and Drury signed big, over-the-top deals. But they all performed rather well in the first few years, only to have their performance tail off significantly later in the contract.
What's so concerning is that most posters on this forum thought Clarkson would follow a similar route: decent performance in the first part of the contract followed by a pretty low pay:results ratio later on. I don't think even the most skeptical here (well, maybe with the exception of the heartbroken Mr. Grieves), would have thought that Clarkson would play so poorly in the first year of the deal at age 29.
I still have a hint of optimism and hope that injury, pressure and lack of continuity have negatively affected Clarkson's play this year. But that hope is wavering, big time.