Grizzly Sow and Cub Encounter

Sept 10...We had dropped Bryan off at the trail head on the lake agreeing to pick him up at dusk.  Scott, (a friend who was here for 5 days) and I went trout fishing.  Towards dusk we were trolling towards the raft and trail head when we say a big sow grizzly and her cub fishing for Salmon on the shore right beside the raft/trail head.  She disappeared along the shore and we heard Bryan's old dog Hannah barking.  We rushed to shore knowing Bryan was unarmed.  Scott bailed out of the boat with his 375 H&H just as Bryan drove out of the bush on his quad..... grinning and saying......."You'll never believe what just happened to me!!!!!!!"  The sow had made 2 false charges....one up the trail to within 15' (this is when Bryan took his hand off Hannah's nose and let her bark)....then the sow returned to the cub.  Bryan sat on the idealling quad to give her time to leave.....and had just thought "well that wasn't that bad!!!!!.... when the sow suddenly made another false charge from 150' thru the thick bush beside him huffing and puffing and throwing her front legs way up in the air...stopping 15' away and then glaring and slowly leaving.  Out on the lake we could hear all the commotion but it took us 3 to 4 minutes to get to shore with our 4 HP motor.  We listened to his story and then after reaching the cabin by boat opened a couple of bottles of beer.        Notes... Bryan had had Bear Spray in the front box on his quad but didn't have time to think of it.  (Also he usually has a rifle with him but didn't this day).  It was a high year for Salmon on the lake and more than normal amounts of Bears where here.