Really now, what's up with Dirk's free throws?

Seriously though, what is going on? Dirk's average of 79 percent this year is his lowest since his rookie season. He's only made 4 of 6 tonight and is shooting 74 percent on the prior four games. For a guy who shot over 90 percent the last two seasons, it just doesn't make any sense. Maybe he's saving them all for the playoffs. Sure, that's it.
-Scooter Hendon