It wasn't edited. It would tell you if it was as the date would be dotted/underlined and hovering over it would tell you when it was last changed. You have a 5 minute or so period where you can make as many changes as you want without it being shown as edited so if he did edit it it will have been within that time frame. If you're claiming he edited days/weeks later then you're mistaken.
Thanks for the clarification about mine entry for this contest.
Ok, now that a Mod and others can confirm the post wasn't edited then OnlineDragon is the official winner.
He received 0.01555 BTC (0.00555 bonus for getting both).
Congrats!
Thanks for the kind words was extremely lucky this time. I am happy that things are clarified now, again congratulations with your legendary rank.