Ive got 4 David Austin roses and my mustead wood has flopped. They were all planted just a year ago. It seems the blooms are too heavy for the shrub and has dragged most of the stems to the ground and it looks a mess. What can I do to improve the look of it?

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I took this photo yesterday, my rose is in its 3rd season..
..these are the supports I use for young roses to grow up on.. they will soon grow and cover these stakes.. I use green string to tie them in..
Mine is of a similar age and habit, with spindly canes and a few big ones shooting up. They do get stronger after a couple of years - Marlorena says in year three we will see a big difference. I use a few small pea sticks to prop them up when necessary, wait til the big canes have flowered then cut them back a bit to encourage a bushier, more rounded shape. If a cane is really pathetic I sometimes cut it right back. Deadhead the ones dropping their petals on the Munstead and others next to them. It’s all normal.
Everyone who grows roses seems to have 'Munstead Wood'...
You can use anything some gardeners even use empty snail shells.
The canes were all very weak, less than 5mm thick so I took drastic action and cut the flopped canes to the ground. I have only 1 strong upright cane left:(
Have I been brave or stupid?
occupying a space of more than 1m x 1m .... you have a lovely rose but it's in the wrong place in that narrow border. I wouldn't have pruned the rose ... I'd have widened the border ... considerably .... take a look here https://www.davidaustinroses.co.uk/munstead-wood
My English shrub roses flopped for the first two or three years, but now are forming lovely mounds with lots of blooms. They have quite a different growth habit to the more upright Hybrid Tea roses that many people are used to.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Most the canes I cut out were only a 1-2mm thick and struggled to support itself before the blooms came.
Hopefully it will recover because I hate roses that only have a cane or 2.