Improper backing ticket

My name is seth, im 21 years old, ive had my CDL permit since i was 18, im a very experienced driver, no accidents as of yesterday and im not a hothead behind the wheel

I drive a low pro International tow truck. Today i was sitting on a road (strobes on flashers also) writing an address down on a piece of paper, the yard i left is a dead end street so theres maby 1 or 2 cars a day traffic. After i got done writing i released the brake and put the truck in gear, i rolled back about a foot and felt a Bump right as i looked into my passenger side mirror. Only then did i see the Dodge charger police car, it had a brush gaurd on the front and my wheellift only pushed it back maby 2 inches. I recieved a ticket for improper backing (2 points), I have the money to pay the ticket but theres a problem. On the 20th Im going to take my CDL road test at the dmv, IDK if this will prevent me from getting my license. This my first offense what should i do?

 

I own a Freightliner, this is my first accident ever driving this truck, and i have to get my CDL because i cant afford to pay a rider anymore. and this was on a private road i might add, The truck only rolled back 1 foot, so i dont see how this is my fault, i have a sign on the cab protector that says keep back 50ft in visible sight. @ triple 6 , i appreciate your encouragement, ive had the fl70 for about a year, i spent my college money getting insurance and Ifta, i have my own authority and inspection stickers. Ive sacraficed too much to let this one thing cut me down. I have a take 3 4 car trailer, and a little contract hauling cars for a company out of atlanta. other than that i just need to get my license again (upgrade from a B to a class A) and be done with this BS