To be honest, Lex had been living for four years with minimal usage of his mind, existing in a state similar to autopilot, but for his body. His understanding of the Masterless technique had improved drastically during this time, but he still felt like it was going to take him a long time to actually master it.
Thus, when he sensed the danger, although he reacted as quickly as he could manage, the sudden increase in awareness disoriented him - after all, most of his mind had been focused on the technique for so long that he forgot what it felt like to exist normally.
Lex, appearing as the Innkeeper, focused his attention on the creature in front of him. He'd been about to use the Butter Knife to attack him because he didn't want to risk it, but the moment he'd targeted the odd beast with the Butter knife, it reigned in its aura, thus granting Lex some time to observe it.
