[Powerlord]

TF2 has radio messages which cause the voicemenu console command to run (iirc voicemenu 1 1 for second menu, second item (which is the "Spy!" voice command).

Having said that, it'd be a very bad idea to block voicemenu 1 0 (Medic!) because it's bound to a key by default, plus that particular voice bind makes icons appear on that team's Medics' HUDs.

Also, the plugin appears to be missing from the first post.