Yes, this is something above the Byzantine Generals Problem - that scenario didn't take into consideration, that the general's "agenda" is changing over time.

Yes, this is something above the Byzantine Generals Problem - that scenario didn't take into consideration, that the general's "agenda" is changing over time. Another interesting angle is, that in case of Bitcoin, both groups have vested interest to cooperate with the other group and having the matter resolved as soon as possible; that's what actually happened in March. It seems to me like a variant of the "Prisoner's dilemma". This is what I think that the "hostile takeover" is highly unlikely (in Bitcoin scenario), since that would very quickly brought the BTC value down. So like in the Prisoner's dilemma, both groups will become silent and cooperate, rather than "betray" the other.