Originally Posted by Surfer
Yeah the Beyonder is much more powerful then Loki for sure, but still they might be able to figure out a way to have Loki do it. I mean the retconed beyonder is essentially a self aware cosmic cube and the cosmic cube in the movie has been transported back to Asgard along with Loki and Thor (probably to be placed in Odin's vault). So, I don't know how they would do it exactly, but if Loki was able to regain control of the cosmic cube temporarilly that would give him the sufficient power to introduce into Algrim and change him to Kurse. Not to mention it would be a nod sort of to comic book fans regarding the beyonder.
A while back I speculated that Selvig was losing his grip on reality because he was referring to the Tesseract as if it was sentient. Then I found out that cosmic cubes (as someone else pointed out, there is more than one, at least in the books) could become sentient. So then I wondered if Selvig is still kind of residually affected by the Tesseract.
Could Loki manipulate Selvig and thereby manipulate the Tesseract? (Selvig is in this Greenwich University scene too)
Of course, this is steering us toward Loki-as-chessmaster territory, and various people associated with the film have commented that Loki was not going to be the villain this time around.