Complex sentence: In March 2012, it was announced that the then current executive producer of "EastEnders", Bryan Kirkwood was to step down, with "experienced series producer" Newman taking over the role on a temporary basis.
Split into simpler sentences: In March 2012, it was announced that the then current executive producer of "EastEnders", Bryan Kirkwood was to step down. Newman, "EastEnders" "experienced series producer" took over the role, on a temporary basis.