Doing a Google search turned up the article "How To Prevent/Remove White Superglue Residue" on MyCustomHotwheels.com.
According to the article, the haze is caused "by trace amounts of moisture on the substrate surfaces". Of course, the author does talk about how to prevent this haze beforehand by using quality Superglue.
Towards the bottom of the article, there are two solutions to removing the haze: a heat gun and petroleum jelly. Two YouTube videos provide live demonstrations of the removal of the haze (provided below).
The heat gun method uses 100 ° air. The narrator of the video does not specify Celsius or Fahrenheit but he does have an accent so I would guess that he's not American and therefore the temperature is probably Celsius.
The petroleum jelly is used in the second video. The narrator doesn't have great success at first until he cleans the plastic a second time.