It is, although to be fair, the fact that they did it doesn’t, in itself, necessarily mean that. I keep reading about how people around the world, having been fed a steady diet of US cop/lawyer media, are confusing US law with their own… e.g. people outside the US insisting on their Miranda rights, etc.
Or, if you were going to do a crazy escalation, you’d do something with the bike they left behind, not leap straight to “hogtying them (presumably under some sort of threat) and risking their life and limb by taking them on a dangerous, unsecured ride.”