New Toadstool leather: placement?

I recently got a 4"x4" toadstool leather for the reef. Right now he is near the bottom so I can sowly getting him used to the lighting I have. I am told they need strong currents and medium to strong lighting. My only problem is that now it's time to move him up, but his big 'ol stump keeps flopping over making it hard to position him where he wont fall off the reef or look silly! Is it ok to kind've pinch his stump inbetween the rockwork to hold him in place?

Also, post pictures of your toadstools if you feel like it :mwave:

I think I'm going to move him up a little tomorrow, it looks like his stump kinda starts to form around whatever its sitting on, so it might work out ok to pinch him in between