This is a kind of language-wisdom: con is derived from latin cum (with), so this means "with the trolls", troll-friendly. The trailing "l" has been lost somewhere in history. The correct usage is obviously "to share con-troll" or "to live con-troll".
The notion of "control" is a perversion of the original "controll". Harmony is displaced by dominance. "Sharing controll" (the ability of friendly communication and tolerance) has been perverted to "having control". See also: uncontrollable and Wikiism and controllism.