HTC Touch Pro (Sprint) HARD RESET
 

1. Power the device off.
2. Press and hold the Volume Down and Center Navigation Button at same time, do not release.
3. Press Power button and hold for a 3 count (quickly - say one thousand one, one thousand two, one thousand three). 1-2 seconds is too short, 4-5 seconds is too long.
4. The screen will instantly show the text to hard reset (this is a white screen with Blue text that provides the next steps to complete the Hard Reset. If you do not get this screen, power the device off and try again).

Warning! Your device will be set back to factory default settings. Please ensure any additional installed programs and/or user data is backed up before proceeding.

Re: HTC Touch Pro (Sprint) HARD RESET
 

Yep, however, I'm still partial to the power + vol.down + center button while holding the stylus in your mouth and resetting method.

But yeah, the couple of times I've had to hard reset in public, I've used your method. You don't want to be the weirdo poking his phone with a stylus in his mouth when you're in public :)

P.S. another option is via software by clicking "clear storage", but it's not always possible