That's one method. The infamous "bar-b-que roll".

However, it's not the sole method. For instance, when Apollo was still attached to the S-IVB, or about to dock with the LM, it needed alternative methods. The LM itself needed an alternative method when it sat on the lunar surface.

Even today, these things must be considered.

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I calculated the odds of this succeeding versus the odds I was doing something incredibly stupid...and I went ahead anyway. - Crow T. Robot

Godspeed, John Glenn. - Scott Carpenter

And these atomic bombs that science burst upon the world that night were strange even to the men that used them.
- H.G Wells, The World Set Free

To the conspiracy crowd, radiation is a big Boogey Man that inspires terror and death in all who encounter it. - JayUtah