Masterson was sentenced to 30 years to life in prison earlier this month after he was convicted on charges of raping two women relating to incidents in the early 2000s. Kutcher and his wife Mila Kunis received backlash after it emerged they were among more than 50 people who wrote to the judge to ask for leniency when sentencing their That '70s Show co-star. The actor announced his resignation from Thorn, the organisation he co-founded to fight child sexual abuse, in a letter to its board on Thursday.