The Spider Is Too Big to Fit in the Hut

It's been a little while since I've done this. Is it a bonus action to lose your form or do you drop it as a free action? That's my question. Okay, the spider's too big to fit in there. So, it's up to you. You glance over and you see it locked into the ice of the wall. There's some strange metallic contraption. Wait, can I go to the dimension? What is that over there? Do you want to look at it while I set the traveler thing down in the dimension door?