http://tibasicdev.wikidot.com/ is my go to site for programming my calculator.
As far as wiping the calculator, I would be willing to bet you either did a hard reset (removing a battery when the calculator is on will do) or something like 2nd>+>7>1>2. As far as I know, there isn't any way to recover data unless you've backed it up on a computer.
I've never played around with making menus in my calculator, but if you change the mode of your calculator from mathprint to classic will change it back to wrap around rather than infinitely running on.
Can't say I've ever found a working computer workspace for ti84 programming though.