The retarget is in "27 minutes, 19 seconds (20 blk)" and the difficulty will increase by 400%. They have to pump it now if they want to keep this up.
Of course many miners chasing the money who
could swap back to BTC when that difficulty increase happens. On the other hand we maybe surprised to see a lot of hash power stay with BCH if some groups have genuinely decided BCH is the better coin.
All that would need to happen is the miners to push the price up by not selling below 'x' amount.
In terms of money chasing miners, BTC is looking a pretty poor choice on the sha256 algo anyway even ignoring BCH...