That wall could be eaten any time. Yesterday 43 BTC buy wall at 0.002+ was destroyed in a single sale and i guess the dumper is probably Christian. His team is mining roughly 50% of newly minted BBR each day with his private GPU mining script. If he is happy to dump at 0.002, there is a chance he will continue to dump at 0.0016. He will keep doing so as long as he still make profit.