ISS Exp. 57 Cmdr. and ESA Astronaut Alexander Gerst's Tweet today says:
Glad our friends are fine. Thanks to the rescue force of >1000 SAR professionals! Today showed again what an amazing vehicle the #Soyuz is, to be able to save the crew from such a failure. Spaceflight is hard. And we must keep trying for the benefit of humankind #Exp57 #SoyuzMS10
and it contains the image below. I've also added a cropped, enlarged and sharpened section for better viewing/discussion.
Does this in fact show the emergency return to Earth that happened today, seen from the ISS? If so, it must be at a fairly long focal length. Can someone explain the details (the two or three dots near the top, and the squiggly smoke)?
I understand that at the time of launch the site will be roughly under the ISS' orbit, but is this just a coincidence that the ISS just happened to pass over, or does that happen frequently as some result of phasing?

