steven allison , 37 , uploaded pictures of himself looking happy and tanned .
he fled to australia after going on run from the law more than a year ago .
police were closing in on him with help of interpol and australian officers .
allison was given 30 month jail sentence for sexual assault of two women .
he was supposed to be lying low but could n't help post clues on facebook .
tracked down by authorities and flown back to uk in handcuffs yesterday .