Glenn Reynolds has an update with comments from Dan Polsby who writes:
Numerous of Lott's opponents (John Donohue, Ian Ayres, Phil Cook, Jens Ludwig, and many others) use the Lott-Mustard numbers, subsequently updated by Lott, in their work because they have to
However, because of Lott's dishonesty, it will now be necessary to check all of Lott's data for accuracy.