@Undinehunt—
At one point, he certainly seemed as if that were what he were attempting. But, for other parts of the story we see that change must be on contact (which he made) and instantaneous. So, even with the second ball flying at him, he should already have dealt with the first chain (which would snap under the subsequent stress, even if he didn't yank it).
So either he didn't try to change the chain, or the author changed the rules (and then quickly changed them back). One way of another, this chapter was a badly constructed masochistic fantasy.