Less than 24 hours after he dangled off the side of the tallest building in Stamford, Conn., again taking part in a holiday rappelling event, Brian Cashman’s feet were firmly on the ground at the Winter Meetings. Cashman arrived for the four-day event believing that the Yankees have much more work to do, and the general manager was said to have spent the day chatting with his counterparts, searching for deals to fill some of the club’s remaining holes.