CINRAM Workers Scarpered

According to the Huntsville Times the majority of the Nepalese H2B workers left town to go work elsewhere. I do not know if that is allowed under the H2B program. It did say they are allowed to travel. See the article here. It seems they had received letters from CINRAM letting them know they were at-will employees, so they acted. To me it sounds like CINRAM was getting ready to let them go. Homeland Security said they are involved, so I don't know if there is any immigration violations.