Broken rebound adjuster

[mbogosia]

I have a banshee rear shock and the rebound on it was crazy while riding today. I mean this thing felt like it was going to throw the rear over me! LOL Anyways, I noticed the rebound adjuster does not click it just turns. Therefore I cannot adjust it. I peeled back the rubber piece that is on top and bottom of the adjuster and a small round pin fell out. In the hole I can still see a pin the goes up and down. Any idea on how to fix or adjust the rebound with the knob broken?

 

[mbogosia]

Here are some pics. There has to be a way I can adjust this thing to its 1/2 way point and then forget about it.

 

[mbogosia]

I am hoping someone can explain how this mechanism works. LOL The dial doesn't connect to anything to adjust the rebound. I don't get it. Also you can see the pin that fell out too.