I dont think its forked , looks like bittrexs wallet has lost sync
From what I can see with a quick glance, it seems that few nodes have
emitted a burst of blocks, probably from an outdated pre fork wallet
(the reward is much less than the new minimum).
These wrong blocks, have been accepted by xra.altexplorers.info:3021, but were rightly
rejected by
http://www.presstab.pw/phpexplorer/XRA/, they are not present in my wallet,
and I imagine, in any of the updated wallet.
Also, if you check in your debug.log you can see that there is still some peers who try to
use an older version.
So, if your wallet indicates that you are now over the 116000 blocks, please, make sure
your wallet is up to date to the latest version.
Bye Bye