Just bust the window and save the weather stripping
That said,
As you have pictured, pulling the bottom out, allows the top part to move/bend into the space allowing the glass to be removed.
But it takes more hands than you have, and the design is to allow instillation more than removal.
But as all rubber ages it becomes hard and brittle.
Best to look on Evil pray for new/soft rubber.
I have found it there a couple of years ago.
Might be wise to take advice of others, and carefully mask to paint.
One slip and you are looking @ new glass and rubber.
Not cheap.
Also you could,
Take your pic and a few more to a glass place (not safelite)
And get their opinion.