The “Council” is defined as the ENS Tokenholders not the DAO. Per paragraph 15 of The ENS Foundation Articles of Association, the Council has the power to appoint or remove a Director, exercisable by notice to the Foundation. There is no mechanism that the DAO must vote to remove Brantly, before a vote of the ENS Tokenholders. The vote, to be legitimate, must be a two vote process: 1) vote to remove Brantly and then 2) vote to appoint a Director.
Further, vote 1 and 2 should not take place at the same time, if the goal is to keep the Directors at 3, because until there is a result on vote 1, vote 2 should not take place, since there is no vacancy; otherwise, there is a scenario of keeping Brantly and voting for a fourth Director.