The term "Hot Recoil" is one that I have not heard before. It may be a term that he and his fellow cannoneers used to describe the action of the guns as they "bounced" from the recoil on hard surface.
Under normal conditions, the trail of the gun would act as a friction brake as the gun recoiled in a rearward direction. Depending on the type of soil or surface and the caliber of the gun, that could be anywhere from a couple feet in soft ground to up to 12'-15' on hard pan.
If the gun was fired on rock, and the trail encountered an immovable object, the recoil force would be directed downward through the wheels and actually lift the gun verticaly.This was very hard on the stock of the gun.
To Join the Company of Military Historians click here