having had a look at the code the plugin needs a line to be deleted in the plugin file before it can be deactivated
so unless someone has FTP access its unlikely
@OP
Just to let you that the forum is now messed up...
If you guys are wanting to try it, have a look at the thread "Get your own myBB in 10 seconds" in this forum.
The board has been re-installed and will be re-installed every 24 hours.
And the modification enabled for template security can't be disabled unless done so by someone with FTP access.