Reed took one look behind him before stepping into the same dungeon Lucian and his team ran into. He didn't do it because Thorin ordered him to or because he wanted to please his captain, but his decision was entirely out of his own independent thought. Reed was tired of being held back; he was never going to grow if he didn't fight his own battles and fight off his pure battle instincts.
When he had attacked those who spoke badly about his late brother, something different came alive in him and gave him the strength to use his ability in new ways. Reed didn't know what it was, but he wanted to chase that feeling. If he continues to stay on Thorin's side like a caged rose in a garden that needs to be protected, then he is never going to change. However, with all that thought, Reed didn't expect to find himself in a blizzard.
