Alexdw1 of Rainham, Kent, United Kingdom) alleged that the worker (Rajamanickam Antonimuthu of QualityPoint Technologies in Tamil Nadu, India), got into a disagreement with him over scope of the project, and sent threatening emails to him saying he would redistribute his copyrighted code if he didn't get his way. Alexdw1 alleged that Rajamanickam Antonimuthu followed through on these threats and posted the code Alexdw1 purchased from him on his public blog. In addition, he also alleged that Rajamanickam posted confidential information entrusted to him, including his mother's private phone number.
Details: Rajamanickam Antonimuthu of QualityPoint Technologies Located in: 2/148, V.O.C Street, Ottapidaram Tuticorin District, Tamil Nadu 628401, India
Update 9/23/2011: Rajamanickam Antonimuthu deleted Alexdw1's mother's phone from his blog and is now telling people that it was never there in the first place. However, web.archive.org has saved a copy of the original which clearly shows that it was: