That post was reported as spam due to the large number of links it had. I felt the post was okay so I told the reporter not to worry. However, another moderator may have felt the spammy vibe due to the links and deleted the topic. To avoid this, I suggest keeping the link count to 2 or 3 max. per post.
Not sure what happened here exactly, but as "superadministrator" or whatever I am able to see things that people have deleted, so I took a look at this and it seemed fine to me. I have restored it and so it should be there now.