If that were the case for more than 4 hours (ok, only below 35% for 4 hours would be required to trigger the action), my motion draft (shameless plug) would restore sell side to 45% 
Assuming a constant buy side that would mean more than 20,000 NBT (roughly 21,200) were brought to market from T6 sell side and $20,000 (in BTC) would be put to T4 buy side. If they’d stay there, they could be used for NSR buybacks, dividends, whatever the NSR holders decide…