Though I would say an injured Grella as third option is not good enough. Healthy Grella with more offense from Muyl, or having Royer or Veron start probably is enough. However, that doesn't mean the team should reject any opportunity to get better. Better the team is the more unlucky moments you can endure and still be successful.
You have to believe that Grella was healthy in that first leg. If Marsch put him out there hampered or if Grella didn't tell anyone about the injury, that's pretty bad given we had Veron on the bench. Double bad considering how poorly Grella played and Marsch left him a long time.