It's sad that TI are having to do this. When I was at school we basically had the choice between Casio and TI85 graphing calculators. Casio were far more popular until people discovered how to run assembly mode programs (and games) off the internet. Then everybody wanted a TI. TI even supported this at first by adding assembly mode into the TI86.
Unfortunately by the time I got to finals at university, graphing calculators had been banned because of the ability to store (and hide) extra programs and information. I guess that by locking them down, Texas are trying to prevent this becoming more widespread. Texas are in a no win situation. They don't want to go after their customers but if they don't they might not have any customers at all!