NOTORIOUSLY bad, similar plugins have been done several billion times. Plus you have done many mistakes in the script for its size....
- There is no need to include AMXX miscellaneous header (amxmisc).
- You keep returning when you ABSOLUTELY don't need to.
- You are checking if user is spec, but not if unsigned (hasn't joined the game yet) and you aren't checking if player is dead. Hamsandwich can demolish your server if you don't use it properly.
- There is no need for CStrike module, also. You could use integrated functions from AMXX core.
- There is no reason to send a message to specs. Say someone dies and switches to spec, then he'll receive a rude-looking message saying "You Are Dead !". Doesn't this look stupid?
Please read some polls in this section, specifically
Plugins, quantity, quality. Unless the plugin is a raw idea or a fixture (for another plugin) there is no reason to publish it.