Deleting Poly_Triangulation

Hi,

I'm using TopExp_Explorer to traverse through the faces of a shape, create a mesh for every single face (I was having some crashes when attaching meshes to entire shapes, some copy using BRepBuilderAPI_Copy, I've heard that it doesn't work too well) and then make a triangulation using Brep_Tool::Triangulation. After I process all the triangles, I try deleting the created handle to Poly_Triangulation, but in the next iteration of the explorer, I get an exception when creating a mesh of a face.

So how can I safely delete the mesh and the triangulation once I'm done with them, to save some memory? I'm dealing with geometries that yield millions of triangles, so memory management is key.

Thanks,
Janko Jerinic