I think a Turbine Waiver suspension is in order:

Waiver Suspension
23. The AMA, through action by the Executive Director or its President, may suspend an individual’s turbine waiver at any time. The waiver holder shall be notified of the suspension in writing, including a summary for the basis of the suspension. A waiver suspension can be predicated on a written complaint by two AMA members.
Where a Contest Director at a sanctioned event believes a turbine waiver holder is operating in a reckless or dangerous manner, the CD shall supply a written report to the AMA describing the infraction(s) and shall disqualify the participant from further flights during the event.
A suspension shall be for periods in multiples of 30 days, up to one year. During the suspension period a waiver holder may operate a turbine aircraft under the supervision of an experienced turbine pilot or on buddy box if required to improve skill level. Upon completion of the suspension period the waiver holder will submit a letter, co-signed by an experienced turbine pilot regarding reinstatement. Repeated suspensions may result in removal of the waiver.

Unless it can be proven that his was caused by complete mechanical or radio malfunction, this guy threatens our hobby and should be taken to task.

Andy