You have the answer.
the other committee member is behind in his levies.
That makes him ineligible to a) stand for the committee and b ) vote at committee meetings
YOU tell the strata manager that you want a committee meeting. You decide the agenda. Since there is only two members, you will have a quorum ( of 1)
you then vote all the motions .
The other committee member can’t do anything about this since the act back you up.