How to effectively defeat an alien "infection"?
I was thinking on the classic alien mass which spreads throught almost any surface, and in contact with live beings, it doesn't consumes them, but takes control of their minds in order to vary the means of spreading, which also can be the ability to control complex machinery.
On my story, a contamined alien ship falls on a planet, and something on it would harm the infection enough to the main "host" be able to wake up from the mind control.
I am trying to imagine a "natural" way to stop it, as if it was original from that planet itself, instead of something made by intelligent life beings. Also, consider it without any magic or similar. My first idea was simply a different type of crystals, which these could be harmful to the infection in some way, but I decided to see if there is better ways to deal with it, intead of having these crystals scattered around the surface of the planet.
I am open to ideas, doesn't need to be scientifically accurate, only rational enough to work.
Edit: Well, this is my first question, so I didn't knew how to make it properly, I ask apologizes(my first language isnt english, so bad grammar may happen)
The disease was found in an abandoned asteroid, by a team trying to mine its resources. 239
It is resistant to fire and can grow at fast speed in vacuum, however it still can grow in atmosphere. It is fully sentient, and works as a hive mind, until he gains control of the protagonist, using him to achive goals of further spread, as he is expert in controling spacecrafts. The disease also can grow tentacle-like parts in order to hold the "victim" and other objects of its interest. Some parts of it has "blob" like substances, these can explode and send parts of the infection further away, ir instantly contaminate the target.
When I said "harm it enough to wake up the main host", I meant that it was in control of the protagonist, and the crash in the planet made able to him break free from the disease, because of the factor in the planet. 238