NO. Popa, I hope LVT doesn’t understand exactly what you’re accusing him of. You’re wrong. The first two posts on the CR this Motzaei Shabbos (that I am aware of) were by (1) Notasheep* and (2) LVT**, here.
They were both on Shabbos afternoon in the US – but in Gateshead, where Notasheep has placed herself many times, and LVT places himself on his profile, it was already Motzaei Shabbos.
What possible gain could Joseph have from falsely placing himself in Gateshead that he would be mechallel Shabbos for? Besides, I’ve seen numerous posts attributed to Joseph, and LVT’s writings don’t seem to me to be anything like them.
*
**
http://www.theyeshivaworld.com/coffeeroom/topic/isis-has-fighter-jets#post-541202
EDIT:
Little Froggie:
See here – http://www.theyeshivaworld.com/coffeeroom/topic/good-usernames#post-540794