Originally Posted by
NoValueAviator
The listing can be cancelled in the Manage Travel tab on Spirit.com, you aren’t required to cancel but it would be discourteous to potentially leave a Spirit pilot looking for you in the gate area.
That's what I gathered from the email, but all attempts to do so invariably resulted in the system showing the "this isn't your boarding pass" barcode page with no further options. In retrospect it might have been a phone browser page limitation.