It all depends on how seriously Murray takes this tournament really, but you know what is the danger ahead for Ferrer haters if Murray decides to tank.
I really don't. Unless you consider Ferrer losing to Tsonga (if he even beats Wawrinka) in QF dangerous for Ferrer haters (which would be bizarre), I really don't see any danger.
Besides, no matter how seriously Murray takes the tournament, he could lose to Tipsy (who has always caused him trouble) and especially Berdych (Tomas beat him here last year - no wind to mess up his serve and send his massive strokes out this time).
Ferrer's only chance of winning is if every WTF contestant withdraws/tanks; he has never beaten any of them in a semi or final of any tournament for a reason.
I concur, if Our Hero decides he'd rather let this title go in order to rest up, the terrier (rightful #5) will be there to sweep up.
You've contradicted yourself there. You admitting he needs Murray to tank to have a chance is enough indication that he is not the rightful #5, if he was beating one of the players ranked above him (it's not like he has to beat 2/3 back to back) should be a possibiity.