Honestly? Unless I missed something, that's a totally OK level of force. They did not hit, beat, trample or otherwise assault that guy. They were rough, but not violent. As rough as required to get him out. I'm sure he was bruised, that's part of resisting. But no, I see no violence there. I say this as someone who is European and politically left-wing (i.e. against government authority).

In reality though the law can't really touch them. I think the fines are quite small amounts like 4$ dollars for violating containment etc, and its bailable too, so legally police don't have a strong imperative to do anything much except chalk a fine.

That too could be challenged, I doubt if all those quarantined, isolated etc in India has been given formal quarantine orders, considering the chaos at airports.

And additionally at this juncture government wouldn't want to overcrowd the prisons at this point of time.