Venezuelan driver Roberto La Rocca had signed for Bamboo Engineering in GP3, but he has lost the drive "...because the support of his sponsors has now become uncertain as a result of the changing political situation in his Venezuelan homeland following the death of president Hugo Chavez last week."
http://www.autosport.com/news/report.php/id/105969
Don't know if that has any bearing on PDVSA/Maldonado.