Through it all, a source said, the Lakers’ pursuit of roster changes in the past week was half-hearted. And that goes back to the tragic helicopter crash that took the life of Lakers legend Kobe Bryant, his daughter and seven others on January 26, just 11 days ahead of the trade deadline. While much of the league has begun to move on from Bryant’s death, these Lakers are just in the early stages of that process. Going through the experience together has bonded them and it proved difficult to break that bond within the roster for the sake of some trade or another.