Less than two weeks after the domestic dispute that landed Charlie Sheen in jail, the actor has returned to the set of 'Two and a Half Men' - and according to his colleagues, Sheen has left his home troubles at home. "He's been incredibly professional, always, but especially in times of personal crisis," co-star Jon Cryer tells PEOPLE. "He is solid as a rock [and] today was no different. ... It's a very funny episode so it went well. Thankfully a good script can get everybody through awkward moments."