Firstly, you say the ticket is less than the cost of the tow, to and from the shop.
Once your on the road and get caught do you really think the cops are going to leave your bike just sitting there? It is legally an unregistered vehicle therefore subject to a tow, (which the tow companies charge a LOT more for, also even if your bike only sat in their yard for 5 minutes there WILL be storage fees tacked on). The officer again if hard nosed CAN direct that the bike be towed to their yard rather than permitting you to have it taken to the shop. If that happens then your looking at a second tow to the shop. The tow operator WILL ask the officer where they want it towed and WILL comply with the request, (they aren't going to put a lucrative police contract at risk for you).
Also depends on how hard core the officer is. Yes there could be a single ticket but there could also be more than a few. Fail to register vehicle, most obvious, then there are others, IE operate unregistered vehicle on a highway, Which is a MOVING violation and affects insurance BTW. Owner permit unregistered vehicle to be operated on a roadway, (although generally reserved for an owner loaning out the vehicle, it CAN still be laid), they may very well then begin looking for other infractions, IE ANY safety related issues. etc etc etc.
You also said about a two way tow. find a shop closer to your house, then once the bike has the safety done, drive yourself to Service Ontario, get the plates return to shop mount plate and ride home all legal.
you didn't say if you own another vehicle if you do and it has a hitch, or you see a neighbor with such a vehicle, rent a bike trailer from Uhaul, offer the neighbor, $50 for the hour of their time.
To ride without a plate is just plain idiotic and begging for trouble. Yes your chances of making it undetected are pretty good UNLESS some do gooder calls it in, or there is an incident, (collision, bike gets dropped and your too injured to get up and ride away etc etc etc).