No the Yanzi tweet wasn't mysteriously taken down. Twitter links seem to be problematic, the links are often including more info and numbers at the end of the link that then take you to a blank page. This happens often, I just enter the link, and then delete a portion at the end of the link, then it works.
I could be wrong, we've heard for about 8 months investors saying "next week is going to be big for CYDY", well, I think tomorrow and/or Mon/Tues/Wed will be very big for CYDY, continuing.....
Here is a link to the Yanzi tweet.
https://twitter.com/Yanzi02735492