Opie's Barbecue in Spicewood had been on the "must visit" list for a while. (Photo ©Chris Wilkins/Texas BBQ Posse) The timing could have been better for my first visit to Opie's Barbecue in Spicewood. I was following a hungry Easter crowd, arriving at 2 p.m. and there wasn't a lot of meat left in the large black warming pit that greets you as you walk in the front door. This joint has been on the Posse's "must visit" list for a while, but unfortunately Spicewood is a little off the beaten path. They've been named a Texas Monthly Top 50…