Yes, you can change the shape, spin-rate (and maybe even charge?) by placing 2 black holes in close orbit around each other.

But it will still never allow you to see inside either black hole, even if they're being stretched, and re-shaped. Nor would it ever be able to destroy either black hole involved in the spiral dance.

No matter how "strong" Black Hole A is, compared to Black Hole B, it can never rip open B.

On a tangent side note:

You can check out this awesome YOUTUBE VIDEO, that is a supercomputer simulation of 2 black holes colliding.

They're spiraling/circling each other before the ultimate collision/merger.

But ya... as for your question... I guess you could imagine it as if you had a place of modelling clay on a table in front of you.

Essentially you can push down on the piece of clay, reshape into a pancake, etc... but you'll never be able to see the part of the table that's directly behind the piece of clay, no matter what shape you use.

And in another clay-metaphor more oriented towards seeing the interior of the black hole:

Imagine you had a diamond hidden inside a large chunk of clay. You can then reshape the clay a lot of times, as a sphere, or square, or somewhat of a pancake... but you won't be able to see the diamond inside.

And nobody looking at your piece of clay in your home would even guess or imagine there's a diamond hidden inside!

I mean sure you can play the metaphor breaks down a bit, because you can squish and tear the clay apart, and eventually see the diamond poking out...

But nothing in our universe that we know of could squish and tear apart a black hole to do that, so it's crystalized "singularity" remains forever hidden from us.

Sorry... these aren't the greatest metaphors, but hopefully that gives a bit of an idea of how the black hole, no matter what you do to it, will keep it's interior hidden from view.

You won't ever be able to glimpse the naked-crystalized singularity inside a black hole! (In fact we don't even know what's inside there.)