DS has recently turned three, and also recently started football classes for three-four year olds. He gets on well most of the time, but does have lapses of concentration where he doesn't listen to the coach. The classes are for an hour and seem quite intensive. If DS has a lapse then DH or I (whoever is there) will try to encourage him back into paying attention or take him out for a break. All the kids do this to an extent, but DS probably the most. At no point is he actively naughty, e.g. being rough, pushing or anything.
Yesterday he was having one of these lapses, DH was there but I wasn't, and the coach tried to catch DS' attention by tickling him, and then lifted him upside down by the feet. I appreciate that this kind of rough play is ok at home with DH, provided DS is into it too. However DH said it wasn't like DS was laughing along too. It all happened rather quickly and then they kind of got on with the class.
Are we being precious? Tell me honestly please. DH wishes he had said something at the time. So we have agreed that if any sign or anything similar, to say something immediately. I can't imagine an adult doing this in another circumstance, e.g. School/nursery.
AIBU to think the coach shouldn't have done that?