My experience of running off road is decidedly limited, but I've never felt a rolled ankle to be that much of a risk on uneven ground precisely because I'm concentrating on where my feet go. It's a sudden and unexpected lump or hole on an otherwise flat surface which I've found more of an issue.
No, sorry was a bit jumbled. I was asking for advice on running on badly rutted trails caused my very wet churned paths quickly baking in the heat