There is a possibility that if the post was only a video link with no other content and that link was somehow broken after posting, that the post may have been deleted by the forum software. No content = no post = deleted by software automatically. ...just thinking...
On another forum my post was not there (this morning) when I looked. I just reposted and if it had been deliberately removed by a mod I am sure I will get told second time round.
That is strange . It went again (and I definitely saw it up there). I think I will just leave it be (no word from anyone about it -maybe its's a glitch of some kind or maybe there is summary justice over there and it was considered an inconsequential post-there was the word "shitty" in I suppose that might have triggered something automatic ;I'll try it again deleting that word) edit :see if it stays up now