Turning down a company's offer to buy you out is a valid reason for them to apply a law designed to prevent movie piracy against you? That "serves 'em right"?
It "serves 'em right" for trying to profit from a clone of someone else's idea, but I doubt they did anything illegal. I hope they fight this and win, but it's a shame that they didn't use the opportunity to create a slightly different variant of Scrabble. Maybe it would have been better.
I'm not. Buying them would have saved Hasbro the effort of hiring developers that knew the Facebook API, getting popular on Facebook, etc. They would have instantly had a popular product and qualified developers to work on the project.