It is impossible to know all the issues here, but I personally harbor no resentment about Weideking and Porsche's aggressive approach.  He and the Porsche management took a huge--and for a while incredibly successful--risk.  Seems to me that the unexpected world economic crisis sabotaged this strategy, not some decision to pull Porsche out of LeMans, etc. 

Will Porsche be terminally damaged?  I very seriously doubt it.  Will
Weideking take the fall?  Probably, but not because of his ineptitude.  Big time corporate managers live by the sword, and die by the sword.