^
ah okay, under Canadian law a 494 CCC (citizens) arrest is no different from a peace office arresting someone without a warrant, except they must of witnessed the offense (not just reasonable and probable grounds/suspicion) and they must deliver you to a peace officer asap.
But they have the same use of force rights, and once they tell you your under arrest, you have to comply or face obstruct/resist/assault peace officer (because they are acting as agents of the state the courts ruled they are for that time public officers/peace officers) and escape custody/unlawfully at large charges.
on the person doing the arrest, they are expected to the minimum force necessary, but can use whatever force is necessary, are expected to inform you of your rights, and if they can safely do so, allow you to call a lawyer while waiting for the police to arrive. (when security guards arrest someone, its not a high priority call...it can be a few hours til the police show up)
</lesson in Canadian law>