The economy is improving, there is more freight flowing, the number of unemployed looking for work is huge - and in that huge number are some that can't stay away from, um, controlled substances - and CSA 2010 tightened up the hiring requirements a bunch. A trucking company has to have many more apply than will make it just to fill their seats. Plus most of those who start on Day One do not make the first year. They either leave, get fired, or move to another job or career.
Old question, but no. CSA 2010 was rolled out in December 2010: http://csa.fmcsa.dot.gov/about/default.aspx
Second hand info. New company driver with Schaefer says when he was leased there, was busy. Now as a company man just got his first message about excessive idling.