Uggh, not this idiocy again; CSG 3 (Stennis) was in the Pacific at the time, and couldn't possibly have done the slightest thing in Benghazi.
There's plenty of real, actual, fishy things about Benghazi - all of this ill-informed kooktastic nutter stuff actually hurts the argument and helps Obama immensely by discrediting the Right.
Changing hostile commanders is not unknown in American history. General MacArthur was effectively exiled to the Philippine after he publicly clashed with Franklin Roosevelt over defense cuts. General Edwin Walker was removed from command by Kennedy when he used right-wing materials to educate troops under his command. Later, Walker was railroaded into a mental institution by the Kennedys, where only pressure from conservative Congressmen effected his release.