Changing routes is a fab idea - I went out at the weekend armed with map and compass (not especially far away from home, just have an appalling sense of direction!!) - best run I have had in ages. Saw parts of the area I haven't seen before and got an off road run (in the rain!).
Oops - the b*****d in question caught me looking at the "angry girlfriend" video last night!! Got him worried as he does have several things worth smashing (serve him right if I did!), but will resist the urge to smash things up - bit more mature than that I would like to think!