I think I'd be ok with it, if the legs are firmly embedded in the ground and there were a good seatbelt so the kid couldn't possibly fall off (which there isn't now). Then swing away. And, er, don't stand underneath in case of puke.
Threatening a mod is ignorant. Threatening me with a phone call is laughable. I'd give you my address before I'd give you my phone number, but I don't want you to show up and ruin my property value. See you in two weeks, sleeping beauty.