So here's the solution. One of the lawyers mentioned it during the S.C. Supreme Court hearing.
The Supreme Court didn't tell the City of Columbia it can't mandate masks. It hit Columbia over the head and told it that State law is superior to Columbia (City) law.
If the Court rules the same way for Richland 2, a simple bookkeeping fix is all that is needed.
Decide that 1% of teachers' and administrators' time is used to announce and enforce masks. Then deal with the teachers' union (or collective bargaining or Red4Ed or whatever the group is) and tell them that their pay will be reduced 1% and then a separate check from a fund that does not contain State dollars this year will be issued for that 1%.
Re-program the computers and it's done.
Now fire the lawyers and get back to work.