You've only let it sit on the strawberries for 5 days. I'd go another week.
I wouldn't dump it. First I'd open the keg up and resyphon it into another keg. Making sure not to get anymore of those strawberries. Then I'd let it mellow for a month and try again with a tasting but not before. Brew something else and try to forget about it for 30 days.
play the bass, brew the beer
What's tappening? :D