Another touchy feely bear story with a strong odor of "bears just need love" Treadwell philosophy. What is not addressed is the many other expert's who admit bear spray "usually" works. Or like the two guides attacked on Chichagof Island. One guide was not bitten until he sprayed the bear! Guess those darn bears don't always read the literature.(Ak daily news 8/19/16). or ask the USGS employee who used spray a few years ago with no effect (yes, she too was chewed on). The bear successfully charged thru the cloud of spray and got her. Researchers at the Univ of Calgary published a study of the use of Spray and stated ""In six cases, the bear continued to act aggressively; in three of these cases the bear attacked the person spraying."
Tom S. Smith, Ph.D., Alaska Science Center reported in his study"  Of these 15 incidents where person(s) chose to use bear pepper spray to defend themselves, 13 were decided successes (87% success rate), and 2 were judged ‘failures’.
So you decide Alaska