I agree with Rusty on citing the rule -- any part of the disc is in bounds and you are okay. However, the question then becomes WHAT PART of the fence is the line.
In reality, every OB line is of zero width. Even when a line is painted, the line itself is either in bounds or out-of-bounds. So with the fence -- is the true line the inside barrier of the fence or the outside barrier of the fence? Is it the posts in the ground that define the shape of the line or is it the connecting pieces?
All of those questions about the fence itself are specific to the course, so I can't answer for you. However, my suspicion is that the disc in question that is leaning against the outside of the fence is OB -- at least, I'm guessing that is the way the course designer intended for that lie to be interpreted.
Flick long and prosper.
VP/Wizard | Roc/Buzz | Firebird | Teebird | Destroyer
Vibram Putter tester -- feel free to ask me any questions.