Well,
I hate unfinished case studies, and the OP isn't going to continue...
...so I ran the site + original KWs through rank tracker, and the results are mostly pretty positive.
I am guessing the KWs are pretty tough (I didn't bother checking). Most of the KW went up a few notches. the one that was at #1 is still at #1, only 2 went down (one dropped off the top 100, the other was only down 2)
Conclusion: well, he may have done more things to it, but whatever, the site was NOT hurt.