I think you're rejecting this too quickly. Uninstalling flash should make these games less attractive (since flash games are bound to be more rewarding than text games) which should make it easier to use other strategies to reduce your motivation to switch tasks. Consider doing this in conjunction with other strategies.
The old thread (found here: http://lesswrong.com/lw/6dc/the_true_rejection_challenge/ ) was becoming very unwieldy and hard to check, so many people suggested we made a second one. I just realized that the only reason it didn't exist yet was bystander effect-like, so I desiced to just do this one.
From the original thread: