That's only if it takes your entire body weight to right the boat.  I found that grabbing on the gunwale and putting my foot on the daggerboard rights my PM very easily.  

My capsized PMD floated very high on her side, and all I had to do was put my hand on the daggerboard close to the boat's bottom, push down, and she popped right up.  If your peapod floats a little deeper, but still on her side, a foot on the submerged centerboard right up next to the boat's bottom should suffice.  As long as your not standing way out on the end of the board and jumping up and down, you probably won't hurt the board.  Mind the boat don't knock you on the head when she comes upright, and be careful not to get your fingers between the board and the slot.

If the boat turns turtle, the best thing would be to rig a line across the bottom from one gunnel to the other so you can use your feet as a fulcrum to push down on one side while you pull up on the other with the line.  In that instance, your centerboard will have likely fallen back into the case, and you might want to secure that so it can't fall back down as the boat comes upright and try to take a swipe at you.  This last part is purely hypothetical, obviously, as I don't have a peapod to capsize.

.....Michael