Or you could just, you know, check the published experimental results:
http://www.technologyreview.com/view/512281/chinese-physicis...
Physicists are increasingly convinced that time is an emergent property that arises due to low level quantum effects, principally entanglement [1].
The experiment in the Ars Technica article is the equivalent of the universe using lazy evaluation. It's really not so mysterious if you think outside the box of classical physics.
Regarding sending information back in time, from what I've read physicists are divided on the issue. Most agree that sending matter back in time is impossible, but information is still up for debate. In this particular experiment, however, any past observer who measured the information sent back in time would have collapsed the entangled quantum state and prevented the experiment from being conducted successfully. So being able to "successfully" send information back in time doesn't appear too useful if you can't read it.
[1] http://arxiv.org/abs/1310.4691
