Mackie posted a picture of himself on Facebook this week which shows him larking with mates during a Halloween party at a trendy Aberdeen nightclub.
The victim's outraged sister, Karena Hemara, told the Herald on Sunday that Aparangi, who has moved to Western Australia with his wife, Elizabeth, was still too upset to speak about the 2009 attack.
"We are far from pleased that this guy is being allowed out for trips and talking about getting released early."
Another source close to the victim told the Record that Hemara, 29, would be enraged by the news. He lost an eye following the attack and was forced to quit the sport he loved.
According to a jail insider, Mackie has been bragging to fellow inmates about how he is due to be released in less than a year.
The Scottish Prison Service said it did not comment on individuals.