[Cerek the Barbaric]

Sounds to me like the Twix got stored in a warehouse where it got overheated. That would account for it all mushing together and decaying the chocolate. Once it got on the shelves, it would have re-solidified. So it may not even be the fault of Toys R Us. It could have actually been delivered that way.

I have to deal with the vending machine operators in my job, and the snack company we deal with will NOT bring chocolate of any kind during the summer months for this very reason. The bars get overheated and melt in the truck and aren't fit for consumption by the time they are delivered.

Of course, Stormymystic is correct that freezing and re-thawing the candy will have the same basic effect on the chocolate.