Seibs was obviously still disappointed in the last 25 minutes, in spite of our injury woes. The fatigue accounts for the lack of quality in our defence but I think he might be referring to some of the game management stuff that can help alleviate the amount of defending you have to do when under said fatigue.
There was a horrible kick from Croker that went dead and gave the Sharks a 7 tackle set. They marched up field and started wrestling back momentum. Then there is the Saab play-the-ball. On top of that, you got the piggy back penalties. I'm not criticising the team as they showed a lot of ticker, but we will need to be smarter in future.