Dalmatiner has things posted to his account which were subject of DMCA takedown notices, including one that was a commercial model  that is licensed through meshbox.com, which  was downloaded at least 336 times before it was pulled. If you think you downloaded it, you should delete it. If you want to license it, do a search by its name and the word "meshbox" and you'll find it. It is not very expensive.

Multiple (as in more than one) copyright violations by a user can get you booted from websites under section 512 of the Digital Millenium Act.

If you downloaded anything he posted to ShareCG, you would well do some homework before using any of it, reposting any of it (if he allowed that) or using it in any commercial works. Its exactly this kind of abuse by pirates that bring artist focused sites into disrepute. The upside is that ShareCG did exactly the right thing to resolve the problem.