The very physical force of Maris' spell is blessedly cut short by the sudden attacks he suffers. The way Bellamy knows this is: he's not being dragged across the floor any longer, crushed flat and helpless by the force of the magic. One minute there, the next gone; good, and he shoves himself at least to his knees, just in time to see the recently-punched Maris stagger back, right into Sabine's arrow.

Maris blocks the second arrow, but Bellamy is ready. His hand, pressed flat to the floor, is within easy reach of a large rock. And since this fight has turned rudimentary and simple, he grabs the rock and throws it, to draw Maris' concentration from Sabine, and Jamie, draw it back over to him--a volley he follows with that good old Templar trick again, digs down below the leftover ache from the spell to blast Maris' connection to the Fade with another mute--more forceful than before; he's tapped in to stubborn anger now, renewed a little of his conviction.

Which means that lightning buzzing at the mage's fingers will fizzle out, at least for the moment, which means that Maris is useless for another second, two, susceptible to another punch to the face, to disarming--or dehanding--