Try changing it up a little bit...This may have been coincidental but this one guy swore that if you kill the Blade with a super or grenade, your chances for Husk to drop are improved...so I wore him down with a fusion or shottie then threw a sticky on him...or maybe it was an axion bolt...but anyways, it worked. Before that I had done over one hundred attempts to get the husk. No promises, but give it a try!