He probably got caught away from his home during daylight hours, with no place to escape to, and sought to hide in your bushes to be safe from dogs and people. He probably would have wandered off back home and away from your yard during the night. Skunks are nocturnal and he would have been very unlikely to move out from under the bushes into the open during the day even if sprayed with a hose. It's sad that he didn't at least get a chance to wander away back home during the night.