When your competition to start is Nassir Little, Mario Hezonja, and Kent Bazemore, you can walk off the street having not played for over a year and be a better option. All things considered, I didn't think he played that badly (he was bad, but he hasn't played in a year either).
Lillard was out, so they were even more short handed. Need to see how he looks in a couple of weeks to really figure out if he can still contribute to winning basketball.