You probably won't remember if you did or did not complete this action but it could easily be deteremined by an accident investigator...
A VERY bad habit of some drivers is cranking the wheel before they are going to make a turn. This means that if you are waiting in an intersection at a light to complete your turn and there is oncoming traffic so you are sitting in the intersection waiting OR if you are on a country road like you were and waiting for the oncoming traffic to clear before completing your left turn and having your wheel cranked so that your front two tires are pointing left (the direction you want to turn)
Some drivers may believe that this is a good idea and the right action before attempting a left turn, they may think, I want to be ready to quickly turn left and clear the road/intersection so that I can turn quickly in front of oncoming traffic or simply they are doing it out of bad instict/habit because maybe that's what they were taught or learned from someone.
Well, I will tell you it is very dangerous and if I am correct in this case can cause serious problems and consequences.
If you have your wheels pointed in the direction of travel and someone rear ends your vehicle perfectly square in the back then guess where your car is going to go?
The direction of your tires, which means that leaves you to be T-boned by oncoming traffic which is a very dangerous situation.
Whether you are at an intersection or on a country road turning onto another road or private entrance you should NEVER turn your wheels to the left until your turn can be made in safety (oncoming traffic has cleared) only then should you give a little bit of gas, then turn your wheel, then give more gas to complete your turn in safety.
If someone rear ends you right square at an intersection or on a country road and you wheels are straight where will you go? Generally straight, Which generally will mean you will hit nothing but space, nothing in front of your vehicle for at least 5-10 meters (if at in intersection where there may be a lightpost, which is still a much safer option than another vehicle travelling at 50km/hr to 100 km/hr depending on the road)
The only exception is if there is another car in front of you waiting to turn in which case if you didn't leave enough room in front of you you will likely rear-end them too. (50% at fault)
Given the details either the car was not paying attention and rear ended you and tried to avoid your car at the last second and swerved left (should have sweved right which would be the shoulder not oncoming traffic)
OR
Your vehicle was already on a slight angle to the left because you had turned your wheels which would mean the first point of contact would be your back left bumper which is what got hit first from what it looks like which would also explain why your vehicle would have spun around.
Do you know if oncoming traffic hit your vehicle as well? It seems pretty unlikely that just the vehicle that rear-ended you did all that damage.
It seems like the vehicle that rear ended you tried to avoid you and hit your left bumper than slid along and hit the drivers side of your vehicle.
Even looking at all of the options I believe it impossible that the other car was not charged with following too close/Careless driving UNLESS with the exception that you failed to signal and the car behind you thought you were just slowing down so the car behind you passed you on the left and you were starting your left turn at the same time and then the collision occured in which case you probably would be 100% at fault and why you were charged.
The most important thing you can do is request disclosure and let us know what you are working against as it is a very tough situation to be in when you can't recall the events in question. Can your passengers remember the events better?