Some of us in Sydney knew Arnold had enterred the Olympia in 1980 about a month beforehand. Paul Graham, the promoter, told me but to not broadcast it. So it was no last minute entry.
Paul and Arnold were mates, however, and lived together in LA just after Arnold arrived in America.
Zane is a cocky guy and when Arnold suggested that winning the Olympia for the third time must made him feel the best ever Frank smugly replied that no, beating Arnold for the Universe in Miami in 1968 was a bigger thrill. That pissed Arnold off. Guys like Arnold are already motivated so adding fuel to the fire is not helping things. He trained in secret. Then Frank got hurt just before the contest and lost some size. He damaged his urethra in a swimming pool when he fell. Ouch.
Read the long thread of 38 pages over at Ironage for more photos and details. It is all there. However, you have to join the site first to read the forums.