From the sounds of generalized affrontery Draco makes, one might think it was his scythe and that he had every right to be there. He mulishly tightens his grip as the fellow shakes it, refusing to be dislodged.

Then, as the stranger tries to scrape him off, he threatens, "I'll--I'll bite you!" Sans wand, it's the only real weapon Draco has at his disposal. He cranes his neck in a creditable attempt to bite the chap's ankle as he waits for Ecks to do his bidding, already. Good help is so hard to find.