Oh yeah You did not have a Labrador.
I would like to believe that the laber allowed him to catch himself, but when trying to open the fist... How many times did the guy fall, trying to open the fist to the dog and get his limb in it? Sorry, but the actively rotating body weighing 40-50 kg and with a slightly developed skill of submission back or side under the master's legs will drop from these very legs at the expense of " once".
These wonderful dogs are so kind and responsive that they can be allowed to open and close, ride on top, pull the tail, and they will be happy.