I don't think there is any facility to "reboot" your account (someone correct me if I'm misinformed). I believe you can go back and edit it, though.
"Free" accounts don't usually get deleted, but I can PM an Admin with your request if you decided to go that route. But yes, setting up a new account would accomplish what you want, though you would also lose any custom foods you might have entered and all your other data.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.