I think I should have gone back down into the park to come back up my normal path, that leads to a place where you can walk under the flyover and get back on the bridge to Hotwells. As it is I just tried heading north and ended up having to cross four lanes of busy traffic.
That seems to be the failure of the pedestrian paths around here: if you know where you're going really well, the best you can hope for is not to make a wrong turn, and then you can end up going all the way around the houses, including quite often back the way you came, and might manage to use some of the provided underpasses and crossings and avoid the most dangerous traffic. But if you don't know them like the back of your hand and just try heading for the place you want to get to, that you can actually see, you'll be led entirely astray and end up in a variety of dead-ends.
GPS Coordinates:
51.44393, -2.62206
Location: Ashton Gate