User blog comment:Mr. Xemnas/Green Goblin CONFIRMED for TASM2/@comment-1895174-20130623030059/@comment-1895174-20130624223726

The chamber does not confirm that he's the Goblin. The chamber just exists, and that's all we know about it. Howard Stark having Captain America's Shield in storage didn't make him Captain America. Maybe the chamber plays into Electro's origin? Maybe its just an Easter Egg hinting at what happens in The Amazing Spider-Man 3??