XPMorten;
I fully concur with Right Way Up's comments. Dual stick inputs is forbidden in Airbus SOPs. Dual input from the sticks is algebraically-summed. That means one stick's input will add to or cancel the other stick's input and no one will know what's going on - very bad work indeed and potentially dangerous as in this case.
"I have control" means "take your hand off the stick" - that's simultaneously backed up by pressing the priority takeover button in situations like these where immediate control is required.