i also think "shadow creek" is military related.
some symbolism research because i have too much time on my hands.
Alpha & Omega
The Alpha and the Omega symbols represent the eternal nature of Jesus Christ and God. http://christianity.about.com/od/symbolspictures/ig/Christian-Symbols-Glossary/Alpha-and-Omega.htm
talks about alpha/omega in reference to the apocalypse: http://en.wikipedia.org/wiki/Alpha_and_Omega
sword
archetypal for strength, often used to display military honor
lightning
can be symbolic for punishment, possibly from god/mother nature
stars
there are 20, unsure of significance
blue, black, white
estonia's flag colors (lol)
most of this makes me think that tent 2 is apocalypse related, with "shadow creek" possibly being some branch of the military, not sure how though.
the roles in that house include a "dow" with basic, half, and full forms, suggesting a sort of transformation throughout the house (think wolfman's transformation). as for "why" people need to shave their heads, it may not even be for the "lol bald people" effect, but maybe theres a part of the costuming/makeup effects that doesn't mesh well with hair or something.
edit, ffffff tweedledum beat me to it. oh wellz.