He didn't tense when Logan took a step towards him, just watched. In response other man's question he started to move, then slowly got to his feet with another soft yelp of pain. One foreleg was held up, off the ground, but he was perfectly capable of running on three. Even if one of his back legs ached fiercely, it would heal.
When he'd managed to climb to his feet he was carefully keeping that submissive posture, tail tucked as he watched Logan out of the corner of his eye. The scowl was hardly reassuring, but the fact the attacks had ceased was at least a sign that the older man had accepted his surrender. Regardless of if he realized it, the dominance and pecking order thing was important and Logan had just settled that rather decisively. A fact which was actually more reassuring than anything else to Nik in his current mindset. And assuming no further attacks were forthcoming, by the time the first mile or two had passed his ears were back up again, though his tail never resumed the high, flagging dominant position. Though he untucked it, it stayed about midlevel as they traveled.