An East Valley couple vacationing to celebrate their first anniversary found themselves abandoned in the ocean, after a dive trip went wrong off the coast of Thailand, reports KHOU.com, Houston, Texas. Lexa and Jake Mendenhall recently became certified scuba divers, and were looking forward to their first real dives in the blue waters off Thailand. They made two one-hour dives, and all was well until they surfaced. Their boat was gone. The Mendenhalls were stranded with another couple of novice divers and two dive instructors from the Thai diving company…