Excuse from what? He competed anyway with that eye patch.
Sometimes when a guy is off he will come up with an excuse, even if he is competing.
Even when guys are "on" but not good enough to win, you'll very rarely hear someone say, "Phil Heath is just a better bodybuilder than I am. The way they judge shows, I can't beat him."
Instead you hear, "I'm working on putting on more size while keeping my conditioning."
Yes Vince competed in Helsinki. But 6th? The man was coming off a 3rd from the year before and I remember some people saying the 6th was a gift.
Whatever the case, hats off to Vince for going ahead and competing with or without a legit injury.