If this was the - very hypothetical - case, what occurrence is there to report? If the pax were offloaded the situation was remedied!!!!!!!!!!!!!!!!!!!!!!!
It makes no difference if the situation was remedied or not, and it was far from hypothetical. It was a fact (stated by the captain) that the aircraft was partially unloaded due to loading issues.
An MOR can be raised for an occurance which did or
which could have lead to an unsafe condition
5.4.3 A report should also be submitted on any occurrence which involves, for example, a defective condition or unsatisfactory behaviour or procedure which did not immediately endanger the aircraft but which, if allowed to continue uncorrected, or if repeated in different, but likely, circumstances, would create a hazard.
I raised an MOR last year for an incident in which a passenger on a helicopter was found to have 4 disposable cigarette lighters in a jacket he was carrying. These were found before he boarded, but only because he dropped one when walking to the aircraft.
(These were very cheaply made very brittle lighters which can explode if dropped on a hard surface).
Should I have ignored the fact that this wasn't stopped by the baggage and security checks, and not raised an MOR due to the situation being remedied before the aircraft departed?