Look at his defence against Melbourne when the game was in the balance with tigers leading 14-10.
The defensive line is set, he just simply chooses to not move up. He walks back while the rest of the team moves forward in a line and Blair runs straight through the hole where Woods should have been if he moved up.
Look at Woods against the Dragons. Woods is the LAST tiger back into the defensive line. This was in the 59th minute. Woods had only just returned to the field in the 54th and was completely fresh. Look at Tim Grant zoom past him. The team is short out wide because Woods is so slow getting back into the defensive line, which forced the rest of the team to compress in and rush up. He shows absolutely no urgency or care.