So throwing a prop in the air isn't counted as Prop Abuse and therefore I think that this warn was unneeded.
1.7a Prop Abuse
No abusing props (grabbing them with the magneto stick to shield yourself, push players away, kill players, to climb or fly with them etc.) [The poltergeist traitor weapon or other prop manipulating weapons void the no prop killing/pushing rule
I also however understand Seargent as he probably didn't know the intention of why you threw the cart, he maybe thought it was to try to kill somebody. However I still think it should be removed
SharkSquad