Re: Well, gee, what do you know?! Worf was right!
Perhaps, but I remember Riker responding that changing course could take them into the anomaly for all they knew. Both his and Worf's suggestions were valid.
But, that argument is invalid. Since the first time through (when they first entered the loop) they'd have no reason to change course, so staying ON course will put them into the loop. Changing their course IS the right thing to do as it will alter things from the first sequence of events.
Just because it's futuristic doesn't mean it's practical.