I could see daylight between his heel and the ground as he went to ground his foot behind the line as the stumps were broken. For all intents and purposes this should be out.
BUT, you may have noticed cricketers wear metal spikes on their shoes for grip. Who here is willing to guess the length of Symonds spike, so we can determine "beyond a reasonable doubt" that his spike was not touching the ground?
I'm still amazed that some people are crediting Australia's dominance solely to umpiring and conspiracies. Surely Australia's superb record overseas with umpires of all nations must be acknowledged, not to mention 3 world cups in a row!
