Spot on Saffer.
I must say elements of this incident and the differing perceptions are very familiar to me. When your kids are in the line of fire, the hackles go up, and a half hearted wave (if you are lucky enough to get one) is not gonna cut it I'm afraid.

Take note kiters - no matter who
you think is in the right/wrong on the beach, if you slam your kite down into/next to someone - or worse, their kids - you are gonna stir up a sh!t storm and buy yourself (and probably all of us kiters) drama, hassles and more than likely council imput/bans.

So why take the chance ey? Just go up the beach (yes I know Pinnaz is tricky like that tho) and leave more room for error.. not the minumum - the maximum.
And if something like situation this happens, for gawd sakes, spare a few precious minutes of valuable kiting time to land, go over and
make sure your appology is known and understood.
A stitch in time saves bannings for all time?