You should be able to get it online:
You might want to read some of the reviews first. If you are looking for full scientific explanations, the reviews suggest that th program was a bit thin. One bit, in one review stood out for me:
“While this is not limited to “liberation therapy” specifically, the documentary also clearly showed what the potential is for damage by non-scientific ways of thinking in combination with social media.”
Note that one of the film makers has a cousin with MS - and this may have influenced the making of the report.