With respect I wasn't "speculating" as to why and in fact said so in my first post but asked why it was directed in an unusual direction after the go-around. At that hour of the day it did elicit a "WTF" type of response, having a 747 thundering over yer house. I've lived in the area for many years and this was unusual.
It probably triggered all of the local noise monitoring sites as well.
JT