It would be nothing to worry about, but too much pressure was on LeaCoin hash rate in a pool, and it forked. When two blocks are found on the same time, it forks.
The user is on bitcointalk, his pool news: https://lea.thecoin.pw/ (Look at latest news, below on the web page).
Why worry.. Better be patient, as always. The site Leacoin explorer ( https://explorer.leacoin.org/ ) says 'data sync in progress, please come back later'.
So it means LEAcoin will be trading back in few days ? I have Jammed LEAcoins in my cryptopia account which are frozen now. Much worried for it
The blockchain is catching up already, few days and we're OK i think. If you're worried, it's better to politely ask the dev what was going on, maybe. The worst thing one can do is panic.