All of Phalanx halts when Robin catches that one hand, like they don't quite realize that they could just use their other, free hand to continue trying to get what they want. There is too much going on in their head for something like that.

"Mine. Working."

They're meeting Robin's eyes with the same sort of directness that he's pinning on them, and by their tone, they're trying just as hard to work this out.