Letting it out is... as good an idea as he's got right now, he supposes. If it's not an ayakashi, there isn't any inherent need to fight it, is there?

"What's the quickest way outside from here?" he wonders aloud, looking down the hall in both directions. Shoving all those long, struggling limbs through a window seems... awkward, so a door is probably better...

Damn, he wishes he actually knew his way around here at all.

"If I hold it from behind by the arms, can you try and make sure it doesn't get me with its tongue?"

The last thing he needs today is weird youkai tongue-related acid burns on his face or something.