If Alonso were not part of the game staff, his 'joke' would bother me, but it would be up to the GMs to decide whether it is sanctionable or not. The problem arises if he is (supposedly) part of the game staff, which would mean that his words represent those of the current owners of BB.
Therefore, if Alonso makes an apology for Nazism, jokingly or not, until there is a clarification from the new staff, I will assume that they do not see anything wrong with this situation and that they are not opposed to the apology for Nazism.