I'll read it quickly because it's very important: “Where a police officer considers it reasonably necessary… to ensure orderly movement of traffic… he or she may remove and store or order the removal and storage of a vehicle, cargo or debris that are directly or indirectly impeding or blocking the normal and reasonable movement of traffic…” So police officers already had the authority, under Ontario's Highway Traffic Act, to tow the vehicles and remove the hot tub, barbecue and tents. They already had those powers.
What additional powers did the Emergencies Act give them?