The name of this op is guessed, based on its position in the op list and its behavior. Originally I thought this might change a lock's timeout time, to, for example, reduce the time until you can move again, after you attacked something, but after testing it, it seems like it actually completely resets the locks. The only known value for the byte is "18" (0x12), which doesn't match a known combination of locks, 0x10 being Run and 0x02 being unknown, however, 0x18 would be Run|Walk, which would match what it's doing.