It’s a U-turn for the just-departed 26-year Arbitron executive. In a memo to staff, Executive VP of Finance & Planning and CFO Sean Creamer notes the requests for more information about the PPM system from the House Judiciary Committee and other places, and says “We are going to need to place even more focus and resource there in the coming months.” Creamer praises recently-hired Senior VP of Press and Investor Relations Didi Blackwood, and Michelle Levister in Legal. But – says today’s T-R-I newsletter – he says “to provide additional bandwidth to our legislative and marketing initiatives, and as importantly to enable us to be even more proactive with our investors and shareholders, we have asked Thom Mocarsky to return to Arbitron in the newly-defined position of Vice President Investor Relations.” It was announced in late May that the Senior VP of Press and Investor relations would be ending a 26-year career at Arbitron. Mocarsky will report to Creamer.