There are lots of reasons to send money to yourself.  Not the least of which, in this context, would be to simply cast doubt as to whether or not you still held it.  We know that the origination address was owned by the dev, but we can't say yet for certain who owns the MoLn address.  (Perhaps c-cex could state if it is/isn't one of theirs?)

If it were a c-cex address I'd expect to see the coins move again at least once, to be consolidated into their backend wallets and/or portioned between hot/cold wallets.  It is unusual for coins sent to an exchange to sit indefinitely at their deposit address.