The trousers can be wedged open on both sides but the parts stick to the body. I don't want to go further lest I should destroy the troll, but assume that you're right and that they are attached to the body.
Exactly - well, destroy the shorts, not the troll.. we probably need to pull them out, like the other's undies.. except with those it is easy to get leverage.. I want to customize one... Might end up breaking it

Not that it has any use now (since the mold is a reverse, can't use it on the old trolls

)... but ther's hope, right?
He's a great character, isn't he? And, have you found him appropriate head gear? Not that silly Viking helmet, obviously. I tried various and settled on this one:
Not yet - but that one does look great!