How do you delete a counter in graphite whisper?

view story

http://serverfault.com – I have a counter at stats.message.foo and want to move it to stats.messages.foo. I've updated my code to populate the new counter, however the old one still exists. I've read all I need to do to remove a stat from graphite is to delete the appropriate whisper file on disk, however it seems that within a few seconds of removing the wsp it gets regenerated (without data). This is an annoyance if I want to rename the key that the data is stored under as I need to remember which key is the correct one. Does anyone know how to permanently remove the old counter? (HowTos)