...Now there's an idea! Although it would probably be Odo pretending to be O'Brien instead.
In general, Founders don't seem to appreciate risking their own neck-imitations. Direct action like this would be atypical, but by no means impossible. OTOH, I don't see Leyton holding back: he wanted people killed when it suited him, and he didn't appear to be particularly cornered yet when he ordered Kira, Worf and the rest killed.
Timo Saloniemi
In general, Founders don't seem to appreciate risking their own neck-imitations. Direct action like this would be atypical, but by no means impossible. OTOH, I don't see Leyton holding back: he wanted people killed when it suited him, and he didn't appear to be particularly cornered yet when he ordered Kira, Worf and the rest killed.
Timo Saloniemi