Just throwing this out there - knew a guy who had a 2.7 GPA from a meh undergrad institution. Got a 177 on his LSAT, got into every T-14 school besides Stanford and Yale (yep, got into Harvard). He now goes to UVA because they gave him a full ride.
If you dig around at Law School Numbers, there are plenty of examples of people with low LSAT scores getting into Yale and NYU after retaking and getting a higher score.