Ok. I have it made. I’m just not at my desk at the moment.

You will have to ensure that you turn your spindle and coolant back on after the M101 is called. 
But this should get you going.

function m101()
local inst = mc.mcGetInstance()
local m01 = mc.mcSignalGetHandle(inst, mc.OSIG_OPT_STOP)
local m01State = mc.mcSignalGetState(m01)
local CoolantOutput = mc.mcSignalGetHandle(inst, mc.OSIG_COOLANTON)
if m01State == 1 then
    mc.mcSignalSetState(CoolantOutput, 0)
    mc.mcSpindleSetDirection(inst, 0);
    mc.mcCntlFeedHold(inst)
end--m101State
end

if (mc.mcInEditor() == 1) then
   m101()
end

Chad, Thank you. That works exactly how I wanted. I use Easy Turn to generate my g-code. I wrote my own post processor and I have it generate a new spindle speed and start spindle for every operation, so inserting a m101 at the end of each tool operation works for me beautifully. Thanks again!