@untailored It’s possible he was dismissed without notice for gross misconduct, with no compensation. But for that there would first need to be an investigation followed by a disciplinary process and usually an appeal process, and there’s no way they could have fitted all that into three working days between coming off air and being let go.
An alternative explanation is that the deed was serious enough to count as gross misconduct but not serious enough to warrant suspension during the investigation, and the whole thing has been going on under total secrecy for weeks. Until Tuesday last week, when he might have been informed of the outcome of the disciplinary, suspended pending outcome of any appeal, and the appeals process was then squeezed into three working days (unusual but possible, if he ultimately decided not to appeal).
That scenario would be feasible if he’s done something like fiddling expenses, which doesn’t present a possible safeguarding risk to colleagues. However the BBC will have done incredibly well to keep the whole thing secret for so long, if that is the case.