I saw this! It was funny, but yeah: the algorithm detected possible abuse and served it to more people than usual, for extra review, and the majority rejected it. 

I think people likely missed the sarcasm (and may even have thought that the "remainder of the comment deleted" message was true, since it's a new system!) 

So, our bad. Sarcasm has been surviving the review process fine in other communities; it may just take a few days for people to get used to the system here.