Organizers of Evel Knievel Days are cutting ties with the festival in the fallout of a struggle over management and control of the three-day event.
Chad Harrington, executive director of Evel Knievel Week Inc., said the group made its decision Tuesday night.
The Montana Standard reports the controversy began when Kelly Knievel sought a new licensing agreement for the use of his father's name in connection with the Butte festival.
At about the same time, the county asked organizers to sign an operating agreement that it said was meant to ensure accountability and stability. Harrington said they had an agreement that was good through next year.
Kelly Knievel left an expletive-laced voicemail for Harrington last week telling him to sign the agreement with the county "or I'm going to destroy you."