To install this plugin, copy the plugin JAR file to your server's plugins folder.
The plugin is fairly simple; it forbids one player from destroying or stealing from another player's armor stand. An OP must be weilding an OP stick to destroy or remove an item from another player's armor stand.
Note that this plugin registers armor stands by their unique ID, rather than their X/Y/Z coordinates, thus a thief or griefer cannot simply push or drop an armor stand to a new X/Y/Z location to remove protection from a given armor stand.