(a) Whenever the court is satisfied that a prisoner has developed a mental illness after conviction but before sentencing so that the prisoner is unable understandingly to participate in the sentencing proceedings, and if the court is satisfied that a sentence of imprisonment may be appropriate, the court may order the prisoner to be confined and treated in the Delaware Psychiatric Center until the prisoner is capable of participating in the sentencing proceedings.
(b) When the court finds that the prisoner is capable of participating in the sentencing proceedings, the prisoner may be sentenced in the ordinary way, but the court may make any adjustment in the sentence which is required in the interest of justice, including a remission of all or any part of the time spent in the Psychiatric Center.