The 68-year-old coach, who retired four years ago, hinted that he was dissatisfied with some of the team's penalties.
I think we're falling on penalties, some of them are even game misconduct penalties. It was sad that we should fall on that, says Melin afterwards.
Mora decided the game in overtime with a numerical advantage. Home forward Daniel Muzito Bagenda took a tripping penalty with three seconds left of the third period and Martin Johnsen decided the game after 1.18 of overtime.
Melin was, however, pleased with much.
I think we have very good quality in what we do. There's a lot that was good that we can take with us.
AIK lost 2-0 to 2-3 in the final period before Albin Sundin could save a point and overtime with the equalizer.
Melin is one of Swedish ice hockey's most experienced coaches and was until last season the most successful coach in SHL history before Frölunda's Roger Rönnberg surpassed him.
Now Melin is back for his fourth stint with the Stockholm team. This after an underperforming AIK fired Markus Åkerblom on Monday after eleven straight matches without a three-point win.
AIK is in eighth place in the table and has a whole 12 points up to a top 6 position.
Mora is the form-strongest team in Hockeyallsvenskan and took their eighth straight win. The team is fifth in the table.
Björklöven leads the series, one point ahead of BIK Karlskoga.