URL alternate image bug

In the new multi-picture posts on imgur, if you remove "gallery" from the URL it sometimes goes to a completely different picture. For example, http://imgur.com/gallery/tdTp0 is two gifs of a dad on a swing, but http://imgur.com/tdTp0 goes to some random wrestler. Sometimes the alternate picture is extremely NSFW or NSFL. Also, the mobile phone version of imgur chooses to display the alternate picture no matter what.

Shamelessly linking my story of it: http://imgur.com/gallery/KUq6K. A bit more detailed description, and the comments verify it's not just me experiencing the issue