How to modify meshes uploaded by other users?

I was looking for a spatula for my game, none have been uploaded as accessories, and I do not know enough blender to make my own mesh. I found This however, but it has the second utensil on it. Is there any way I can edit the mesh (I have the mesh saved as a file) and edit it so that only the spatula is left? Thanks in advance!

Use BTR plugin and download it as obj file and edit it as u want.