How to increase rank before meeting final boos in Meat Circus?

[hbpb]

I have almost completed Meat Circus level, but I want to get all the figments and cobwebs I missed on other levels and erlier in this level. If I go back to the doors of minds I can go in other levels using the doors, but when I go back into Meat circus I automatically get into the fight with the butcher Boss! But I want to get to the beginning of meat circus level and collect the figments at the top of the level.

 

How am I supposed to get all the figments so I can get 100% now ???

 

I want to teleport to the top of Meat Circus and collect the missing figments at the beginning of the level.