def flip_render(proxy_state,render_state):
    """ This is to flip the standin from proxy to render state
     If the placement node connection is broken """
    import maya.cmds as cmds
    standin_proxy = cmds.ls("*:*Proxy*", type='transform')
    standin_render = cmds.ls("*:*Render*", type='transform')
    for proxy in standin_proxy:
        cmds.select(proxy)
        try:
            cmds.setAttr(proxy + ".visibility", proxy_state)
        except:
            print "skipping"

    for r in standin_render:
        cmds.select(r)
        try:
            cmds.setAttr(r + ".visibility", render_state)
        except:
            print "skipping"
flip_render(0,1)