You're right, Mare, it could have been me.  In my 40+ years wandering Anchorage trails, however, I've been fortunate to have avoided bad moose encounters, but I'm also cautious.  Not being there and without details in the article, we're just guessing.  It's always convenient if others are on the trail to wait and see a moose's reation when they pass, if any, before proceeding ;-)