I just find the whole thing weird. I just think it seems unlikely that a board would decide something then about-face so rapidly as to have a meeting at the office the next day. It would be conventional for further meetings to take place at the offices of lawyers, for example.
It would also be normal for the non-fired members of staff to be instructed to have no further contact with the fired person without legal counsel present.
Sometimes it seems very much like everyone here is really playing to the cameras in a big way.
Either by himself or by the person that permitted him access knowing beyond any reasonable doubt that they were not authorized to be there?
If systems were accessed, was another crime committed?
If a person facilitated that access, has the boundary for 'conspiracy to commit...' been reached?