Handcuffed at gunpoint, and taken into custody in back of cop car, at which point I'd consider it an arrest, although not sure of "legal" definition. Ultimately released before being taken to jail.
I'd consider the handcuffing to be an arrest, although legally police may try to argue otherwise.
Separately, why in the world did the police have guns drawn at any point in this incident? What exactly was on the 911 call to have the police come out with guns drawn ready to shoot? Either terrible judgement by the police, or criminal SWATing-like call by the neighbor to exaggerate the threat.
It would have been far more appropriate to draw guns, handcuff & arrest the neighbor that made the phone call... (not to say that would be appropriate either, but far more reasonable to arrest the person that unreasonably put lives at risk).
On topic but off topic. Cuffs are tricky.
Long time ago I saw an episode of COPs.
For the younger it was a fox show where cameramen would follow a cop around. No shooting stuff but real life events and arrests.
This episode cop pulled over some guys for some safety thing which I forgot. May have been a large unsecured pole hanging out back of the car unsecured but it was something like that.
Cop walks up to the car and dude inside was acting really strange, kept getting out like he was going to run, shaking his head just acting really strange.
Cop says to him “I want to put cuffs on you for your safety and my safety” “I am not arresting you, I’ll let go once I look in your car”
At this point it was obvious dude was not born here and he agreed.
Cop cuffed him, did his stuff. Spoke to the guy about securing the board (I think) and I think he gave him some rope to do it. Then let the dude go.
Memory is vague about this incident but I believe another cop who showed up said the dude came from a place where when the police arrest you you’ll never see home again.
Obviously in a case like that it is appropriate to cuff a dude. Simply safer for everyone involved and yes I doubt this scenario happened with the realtor and buyer.
Just pointing out there are valid reasons to restrain someone without arresting them.