Broken Lojack Alarm Button on 2005 Tacoma Acces Cab

[geo2199]

I did try to search but nothing came up. I drive a 2005 Toyota Tacoma pre-runner access cab. About two nights ago I was trying to push the button on my lojack alarm in to arm it that way it can let out an audible alarm if it is tampered with and it just fell back into the dash. The button is located just to the right of the fog light switch. Now my question is how do you detach the lower gray colored part of the dash under the steering wheel to reach it and push it back through the hole?

And excuse the quality of the pics, but it was taken from my cell phone in a pretty dark garage. The first pic is off where the button is supposed to stick out.
The second pic is of how the button is now in the hole in the dash.
And the last pic is of the grey part of the dash i want to remove in order to reach the button so i can push it back through the hole.