Backside, back towards the kite first? Frontside, front towards the kite first? But when you initiate the jump, and thus the spin, the kite is usually above or slightly behind you (unless you popping off a wave, or just popping by edging upwind slightly), therefore your explanations are a bit misleading.
Also, with the kite in front of you, low or high, no matter, unless you are riding toeside, any spin, in any direction, will have you back facing the kite after the first 180 deg, so this does not describe it either, unless you mean that backside is when riding regular and frontside is when riding toeside???!
For true back and front side explanations, you have to go back to wave surfing, skating or snowboarding... Coming up the face of the wave / ramp / pipe, and then turning so your back and heels are facing the wave / ramp / pipe, more than your front and toes, is backside. Continuing this motion to launch out of the lip / coping / lip with your back and heels facing the lip / coping / lip with a rotation up to 180 degs, to return to the wave / ramp / pipe going forwards will be a backside air.
Coming up the face of the wave / ramp / pipe, with your front and toes facing the wave / ramp / pipe is frontside... and the rest is self explanatory.
The only way to really explain frontside and backside spins in kiting is by using the direction of movement. i.e. Riding normally, when the right foot is the leading foot spinning clockwise is frontside, while anti-clockwise is backside.
Riding normally, when the left foot is the leading foot spinning clockwise is backside, while anti-clockwise is frontside.
Visualise it for all the boardsports that I mentioned and you will see that I am right.