This happened back in December actually. Motes of light are still grouped with 'Materials' so when I went to go use some on one of my characters I accidentally hovered over armor materials and deleted all I had on that character. It was far quicker and easier than it should have been to delete them. I would really appreciate if I could have them restored to my account! And while you're at it, please move motes to consumables and make it harder to delete important materials, maybe even let us lock stacks so you can't delete them? Is that so much to ask? Bounties take 10x longer to delete but I actually want to delete those, whereas I have *never* had an occasion to purposefully delete materials.
bungie plz
Run court of oryx, and strikes. You'll get your materials back fast. I've done the same thing, but if you just play the game, then you will have it back in no time.