York doesn't so much spin as snap. It's instinctual, something's on his blind side, get it in line of sight now. He whips round, snatching Sigma's hand and twisting just hard enough that he won't be able to pull away without it hurting more.

At the same time, he moves back, trying to get away from the potential threat, but his foot catches on a thread and he unbalances, pulling Sigma after him as he falls.