Interesting. I can still see these "deleted" tweets when I retrieve JSON from the command line. I do not like using Twitter's user interface, especially the way it uses Javascript, so I wrote a quick shell script called 1.sh to read Twitter without using a graphical web browser.

https://news.ycombinator.com/item?id=27056734

To read the JSON, I have been experimenting with json_reformat from https://github.com/lloyd/yajl

   1.sh > 1.json

   sed -n /{\"data\"/p 1.json|json_reformat|sed  -n -e 's/ *//' \ 
   -e '/created_at/p;/sation_id_str/p;/full_text/p'|grep -B2 full_text|less