Hi guys
Yes, that book certainly does sound mixed up. If you were to lose engine 1, the resulting yaw (to the left in that particular case) would most certainly be INCREASED by the influence of a crosswind from the left. This crosswind would indeed attempt to weathercock the aircraft in the same direction as the assymetric yaw. As popay correctly pointed out, the presence of keel behind the aircraft's CG will always attempt to cock the aircraft into wind and hence the book doesn't seem to make much sense!
A publishing error perhaps?
Hope this helped
Best Regards