Grizzly was either a Coward or into Sports Hunting

[jeff of pa]

My guess He Wanted to Know They were Afraid of Him,
Because he didn't want to get hurt if they were stronger.

Or he Liked the Sport of the Chase. Doubtful

Grizzly follows couple along popular trail in terrifying encounter​

 

[GirlWithWolf]

Maybe he was having a bad day and just needed a hug. I don’t know a lot about grizzly bears except that is not where you want to find yourself. Black bears are much easier to deal with.

 

[releventchair]

Younger bear I suspect.
People mentioned doing the same thing it did , spread arms and try to appear bigger.

One out of a hundred might be "the" bear that descends like a thunderclap slapping and chomping frail human eggshells.
It could be the first ,last , or any other one encountered.
About the time someone thinks they know what a bear will do; they don't know. Yes self included.
I've some old accounts from varied historic sources. Most of which suggest I won't insult large bears if I can't avoid being in ones zip code .

Trail near home after a deer hunt as it was getting dark a blackie look me over after running up alongside then swinging into my trail and standing up close enough to see me well about twenty yards away.
Young bear too ; and learning.
When it dropped back on to all fours it headed towards my yard. (Which seemed better to me than it standing on the trail I was on.