Nope, due to the confidentiality agreement. The one I signed for TDK was 3 pages in length, and prohibited even telling family members details about the scene that I was involved in.
Just after I got done with TDK, I read about an extra who was in the last Indiana Jones movie. After his shoot, he gave a story to his local newspaper. When the story went out and Spielberg/Lucas found out, his part was removed from the final cut and he was possibly even blacklisted as an extra for future roles.
Here's a quick link to the story:
http://www.nypost.com/p/pagesix/ite...O;jsessionid=7835F30AEE98DAC68935B04F465BDF00