Coming on the heels of day-long heavy metal festivals such as Warped, Mayhem, Trespass, and Summer Slaughter, the Uproar Festival, which stopped at Blossom Music Center yesterday, seemed like an afterthought. It didn’t really need to pass itself as a festival. In fact, if the tour had just featured Shinedown, Godsmack, and Staind, it probably would have drawn just fine. Adding a side stage seemed superfluous, and not too many fans arrived early enough yesterday to see bands such as Fozzy, Deuce and Mindset Evolution. In fact, even POD, probably the best-known of the acts that played on the side stage, drew only a small crowd.