This link far better describes the Old Timey term "horse sense" than I can A drifting cowboy: Cowboy Wisdom -- Horse sense or credit where it isn't always due
Not all horses have horse sense.
I have one that did just what the OP's horse did when we first moved here and he got too close to a couple dangling pieces of electric wire on an old fence line. He's the horse that stops dead and won't breath if the saddle turns. He is also the horse that panics in the wide open spaces and will lay down like a camel, refusing to get up. At least he used to; he's 17 now and not quite as insecure as he used to be. He's the horse that I have to constantly talk to him and touch him because whatever he sees 1500 feet away, on the ridge, has managed to whisk itself into his stall and is touching him
I have one that would fight, kick, scream until he ripped his chest open, given half the chance. He would run thru the fence, in a panic, in a skinny minute if we didn't have 22 acres.
The other two would give it awhile and if no one came, they'd find their own way out, regardless of the end result.
Like people, there are varying degrees of thinking within the horse world.
My alpha horse is of such uncanny intelligence that just about every experienced horse person, professional and non-professional has commented on it. A farrier once said he wished he had "--a hundred horses like Duke and he'd be a very wealthy man." Duke's the horse in my avatar, at age 16. He is now 24 and we've been buds 21+ years.
So yes, you've got a great horse - big smoochies to him for waiting to be rescued