_**An "inspirational film" that's actually inspiring**_ I bought "Cutback" on DVD blindly yesterday thinking it was a surfing drama/sports flick akin to, say, 2002's "Blue Crush." It is and it isn't. The surfing and sports competition take a serious backseat to the inspirational coming-of-age drama. Released in 2010, "Cutback" tells the story of teenager Luke Harris (Justin Schwan) and his parents (Greg Carlson & Raquel Gardner). The mother's a woman of faith, but the father and son aren't. There are signs of marital problems, but this is a very solid family. Luke's goofy best friend, Casey,…