 What makes the protagonists become less concerned about being trapped by the beasts?
Hathaway only knew he was picked up and hurled against a lever-bank, and that Marnagan wasn't long in following, swearing loud words. A sweeter one still of Marnagan beating hell out of the controls and keeping his words to himself until just now. Hathaway felt himself grabbed; he and Marnagan rattled around—human dice in a croupier's cup. They stood in the middle of a pocked, time-eroded meteor plain that stretched off, dipping down into silent indigo and a rash of stars. Super-gravity and a couple of well-tossed meteors. "People crashing here die from air-lack, no food, or from wounds caused at the crackup.
 They realized the beasts were not actual beasts, but were meant to seem real.
 They realized that the beasts were not actually interested in hurting them, so they were able to calmly leave their hiding spot.  They realized that the beasts were too big to fit into the space they were in, so they could camp out in that spot indefinitely.  They realized the beasts were not actual beasts, but were meant to seem real.  They realized that the beasts die when their photo is taken, and they had captured many of the beasts on camera.