I think they won't continue with Udoka because of this situation.
They did very well with Udoka last season, but this season they have to do without him.
My guess is the Boston Celtics are looking for a new coach right now.
They are not looking for a new coach, assistant coach Joe Mazzulla, very young coach for them. Big Al is even older than him and he is the same age as Danilo G. (who unfortunately is injured and can't play with the team).
And he had like 3-4 days to settle down as their new coach in this most difficult time. The team needs to heal first before they can really go one with the start of the new season which is just around the corner. So really hard for the players to digest and see them without the coach that brought them to the finals and almost win the NBA championship.