Trivia: Christopher Lee did this movie for free, and considers it one of his best roles ever.
Trivia: Lindsay Kemp plays Alder MacGreagor, the father of Willow (Britt Ekland). In real life, Kemp was only four years older than Ekland.
Trivia: Edward Woodward saw the Wicker Man structure for the first time on the day the climax was shot, so his cry "Oh, God. Oh, Jesus Christ" is part him acting and part his own genuine reaction.
Answer: He would likely die from the heat or smoke inhalation long before the wood would deteriorate enough for him to fall out. The film also makes a point to show that Howie has given up trying to fight the villagers and has accepted his fate, so even if he could have forced his way out he no longer had the will to do so.
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