You're a school bus-driving fat Irish bastard... so, of course, it's a conspiracy.:lol:
Yeah, I made my own with bulk powder and Penetrate and my first batch came out as you described, even when I reheated/remixed it. Didn't seem to hinder the results though. Kinda sucks that you would pay for the convenience of not having to homebrew... and then still end up with grit.
F#ck 'em, IC... you rub that sand into your supple, sensitive, pink, fat, Irish skin... and you do it with a smile. Just to spite them.