Can you have yourself admitted as voluntary to a psychiatric hospital avoid your spouse having involuntary from court order?

No, voluntarily admitting yourself to a psychiatric hospital would not preclude your spouse from pursuing an involuntary psychiatric hold through a court order. Involuntary treatment or involuntary psychiatric treatment orders (ITOs or IPOs) are legal measures by which individuals can be required to receive outpatient or inpatient mental health treatment against their will based on court order