In 2005, Didak's season was disrupted by injuries and problems. He had knee surgery during the pre-season, setting him up for his first game on ANZAC Day against Essendon. His injury had an effect upon his performances. Having niggles since the mid-year break he was suspended in Round 14 for two matches and returning from that he injured an ankle. The next week he returned he lasted only 20 minutes, when he suddenly fainted on the ground with an irregular heart beat.
In late June 2007, it was revealed that Didak had met with Christopher Hudson, the self-confessed shooter in the 2007 Melbourne CBD shootings days before the shootings took place. According to police, Didak left the Spearmint Rhino with Hudson, where Hudson then allegedly fired random shots before travelling to the Hells Angels' East County Chapter headquarters in Campbellfield. Police believe that Didak was later dropped off near Southbank after the shooting incidents about 6.00am.
On 3 August 2008, Didak was a passenger in a car being driven by intoxicated teammate Heath Shaw which collided with another parked car. Both men initially denied that Didak was in any way involved. However, witness accounts to the incident identified him and, on 4 August 2008, both men were fined and suspended for the remainder of the season over the deception.
On 6 September 2012, Alan became a first time dad to daughter Indiana Willow Didak with his long term partner Jacinta Jellett.