Left side of my window came out of the pivot shoe

This morning I attempted to close my single hung Kinro window. It appears the left side of the window has somehow come out of the pivot shoe. The shoe has not come out of the track, just the window sash has somehow come out of the shoe.
Do I just twist the sash up and out of the window frame to get it out and how does it go back in?

These windows are in a 1997 Redmond Manufactured home.

Thank you. Last evening I went home and checked into it further after learning everything I never wanted to know about how windows work.

I have a manufactured home with Kinro Windows in it.

The small kitchen window is the one with the issue. So I took the window out of the frame last night. It looks like what's happened is that the balance springs have not been attended in many years (thus the reason the windows are difficult to open/close.

The bottom edge of the window sash has a pin sticking out of the side. THis pin is attached via a screw somehow to the bottom of the window. The frame around the entire window sash must be made of some sort of thin metal or other rippable material because it simply ripped (reminds me of a piece of aluminum foil how it rips) along both the inner and outer edge of the bottom edge of the sash. So the pin assembly flops. Because of the instability of the pin now, the entire balance spring assembly won't do it's job.

I searched to see if I could buy a replacement Kinro lower sash for the window and am having no luck.

Now am searching to see if it can be fixed or whether replacement of the entire window is my only option.

Now must learn how to properly measure and figure out what size replacement window I need then prepare and hope my father can assist me in replacing the window.

  I thought I had it all covered by measuring the sash itself. It's 28" wide and 15.25" tall, so it's quite a small window.

I can still use the window - I just have to prop it open if I want it open.

So, while I'm working on that little problem, I'm going to tackle the spring balancers in the other windows so I hopefully don't end up having to replace all the window. I'm thinking I'll have to replace all the spring balancer things because all the windows are difficult to move and one of them goes "Pop! Sproing" when I open it.

I'll be a pro at this afore long! :-)