The Moore family released a statement Sunday, but provided no further details, only the rider "continues to be monitored in ICU."
The 25-year-old was performing a flip Thursday when he clipped the top of a jump. He went over the handlebars and the heavy sled rolled over him. He walked off the course with help and transported to a hospital with a concussion.
While there, he developed bleeding around his heart and was flown to Grand Junction for surgery Friday.
His younger brother, Colten, also crashed in the competition and was taken to the hospital with a separated pelvis.