First of all, that's not a Deus ex Machina. It's called being DIVINE.
Second, guarded against WHAT? Against being identified as Chaotic Evil?
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)