Couple things to put everything in perspective - 1st when you see cubs anyone familiar with bears will know mama is close by, so you better prepare yourself for mama quickly and back on out at the same time. They surely were preparing once they saw the cubs. 2nd - the charge took place well beyond the 8 feet the commentor talks about and once mama hits water she slowed way down and with the muzzle blast and water resistance she gave up the "bluff" charge. In the thickets it might have been a different story but as with everything - as long as it ends well for everyone we can put whatever twist to the story we like and this is my "twist".