Inlet box to electrical shower leaking and stuck

The inlet to our electrical shower has two pipes (hot/cold) coming from a small (part metal ?) box attached to the wall. However, a leak developed at the side of the box and actually this has grown to be a relatively large hole in the wall of the box resulting in water streaming out.

I’m not sure of the exact purpose of this box but presume it couples the pipes coming through the wall to those going into the shower, i.e. that it provides a 90 degree angle. The problem is that the box cannot be moved or budged whatsoever. Therefore, I have not been able to remove this to e.g. replace it by another box.

I’m thinking of actually cutting the box open to try to remove it by taking it apart (or get a big hammer...). However, as I’m not sure of the exact function, mechanics and coupling of the box, I’m a bit reluctant.

Any help would be much appreciated.

Many Thanks

Bump - anybody who can help me with what would happen if I just took a brute force approach to this ?

your post don't really make any sense.

post a pic will help us.

OK, thanks, I have uploaded a couple of pictures showing the infamous box and I hope this brings some meaning to the original post. The close up shows a screwhole in the center and also the hole in the side.

//www.diynot.com/network/hmdk/albums/

Not the best quality images but I hope they will do.

i see the shower is a showerforce regal but don't reconise the box.
useally just 2 elbows.