What kind of fencing is this, and can it be moved?

Our back garden backs onto a forestry commision run park type thing, it's really just an overgrown dog toilet, but they decided to put a 7ft green metal fence around the perimiter, but whoever did it seems to have done it in a wavy zig zag pattern and I am needing to replace my back fence which is next to this green metal fence. At one end, the gap is about a foot and the other end it is 2.5+feet. I am going to go up to the metal fence with my concrete and wooden fence, but the middle post on the metal fence comes close to my fence, so I would not have a straight line.

I've drawn roughly how it is now and how I want it to be. To get it as I need it to be, I'd have to dig out one of the metal posts and move it about 6-12 inches out.

What I want to know is, is it just a case of digging round the concreteted in post and then push it where I need it to go and then fill with new concrete once in place? The metal mesh used is held on by some weird fasteners, looks like anti tamper screws, so if I can dig round the post and push it over, then that would be preferable.

Doable? Cheers!

 

Sorry mate, it was saying the pics were too big so had to resize

 

It would be a handy if I could get these off and back on again, but I guess they aren't made to come off and back on?

 

I posted another pic of the ones that are on, they look different. Might you know anything about them? cheers for the help!

 

Indeed, I can't work out how they work, unless the last 10mm is tapped in?

 

Thanks, yes, you see now they look like they'd give a little if I pushed from the other side to move the post, as so the ones that are on.

 

Yes, they are the fixings right round the park. No manufacturer's name on the fencing that I can see.

 

Just looking at the back of the posts, the bolt seems to go right through with some kind of nut on the back, I wonder if I can get the back nut off, if it'll release the bolt out of that housing?