ASIC arrests former high-flyer on $6m charges IN his heyday Andrew Sigalla could draw a handful of bookmakers including Tom Waterhouse, and even billionaire Richard Pratt's mistress Shari Lee Hitchcock, to his corporate battle with Celebrity Apprentice star Mark Bouris. But his tenure as chairman and chief executive of struggling fastening manufacturer TZ Ltd has again returned to haunt the Sydney businessman and keen punter.