Should I report nursery to inspectors?

I recently visited a nursery for my 6 month old baby and saw two instances of a staff member dragging a child by their arm along the floor, on their knees. This was in response to the child wandering off / not following instructions. I imagine the child was around 2 years old.

Is this inappropriate handling of the child or is this just the reality of caring for a 2 year old? I am a first time mum with a baby, so I have little experience of the nursery setting or toddlers. In my gut, it felt wrong and I feel compelled to inform ofsted inspectors of was I witnessed.

Thoughts?