Nope, I am not saying that: I am assuming that in a critical phase of flight including take off, landing and, in the case under discussion, tanking then a crew aircraft would have the full crew complement at station and would be operated as designed, as a crew aircraft. But, it is only an assumption, it would be up to the operating authority to decide, not me. It is not impossible, but would not be advisable, to land the A330 single pilot, it has been done when the other pilot has been incapacitated.
I am not sure why you think that the A330 is less robust, where is the evidence of that? A loose article misplaced by a pilot impinged on the flying controls. In the same scenario an older aircraft would have continued to pitch down until the article was removed or the aircraft broke up, the control laws on the Airbus prevented that by stabilising it in a high speed descent with idle thrust.