I was, in undergrad. It was a structured six-year medical school program, with all in-program classes mapped out in a rigid order. It was difficult to connect with the people in my "new" class year, since all the cliques had formed already. I almost certainly would have switched into CS anyway, but that was still a factor.
I think it would be much less of an issue in law school, since 2Ls and 3Ls mix pretty thoroughly in their classes (with some exceptions for the few classes that have prerequisites). I'm in classes with 2Ls now whom I took through orientation last year, as well as with my 3L peers.
Are you going back in January, or next September? Either way, you'll still have one year together with your littermates, and can make connections with the kiddies during that time. Focus on healing now, worry about school when you start again. I'm betting you'll be fine.