Its only a marketing strategy he wants you to sell our LTCs so he can buy it back with cheaper price,i heard some rumors that he will join Roger ver's team i hope he wont do that BCash is manipulated.
Yes, that must be it. He wrote in his Twitter before that he believes ltc awaits a big correction and that he asks people not to buy it now unless they are okay if it goes down to $20. Perhaps he even truly believes in that, not just tries to manipulate the market. It's rational to sell on high prices, even if you created the coin. Everyone wants profit.
Moreover, as said in the article, Charlie ensures that the sold amount is very small in comparison with daily trading volume, so the market will not crash because of that. I think he's a good guy and he doesn't want people to lose money, so encourages them to sell now, since it would be profitable for lots of people now.