Sounds fishy to me

Hearing coming up on March 1, to show that stbx can find work. Judge ordered a work search (30 places). I found out that my stbx is going in to have surgery this week to have some lymph nodes removed (melanoma). Now, he had a PET scan done a few months ago and was told it was completely clear-even told the judge last time we were in court. I strongly believe he's trying to get out of looking for work. Obviously, when we go to court he's going to have to bring proof to give to Child Support services and the judge, correct? On the phone he told our daughter he's been going to counseling. He's a drug addict and he's always said he suffers from bi-polar or depression (he denies he's an addict). I'm very concerned that some doctor is going to write him a note saying he can't work. He's a liar! He had our doctor put him on disability instead of unemployment because the benefits paid more. I've written my declarations and submitted them (stating the kind of work he's done in the past), and attached copies of his old check stubs and pages of places showing employment opportunities for him. I was told I can give testimony at the hearing so I've partially prepared a statement. In it I state how he's been basically mooching off his family and how he lied to our family doctor to put him on disability, that he blames ME for his addiction, etc. If he does bring a note from a doctor, what happens? Is that it, I'm out of luck? Will I have a chance to speak my peace to the judge?