You would have to be quick as the 'I have control' would probably be accompanied by an elbow in the chops.
From the UK ANO:
141 Every person in an aircraft must obey all lawful commands which the commander of
that aircraft may give for the purpose of securing the safety of the aircraft and of
persons or property carried in the aircraft, or the safety, efficiency or regularity of air
navigation.
142 A person must not while in an aircraft:
(a) use any threatening, abusive or insulting words towards a member of the crew
of the aircraft;
(b) behave in a threatening, abusive, insulting or disorderly manner towards a
member of the crew of the aircraft; or
(c) intentionally interfere with the performance by a member of the crew of the
aircraft of the crew member's duties.
Unauthorised take-over is a breach of Article 142.