-Thermopoly occured BEFORE the sarissas were invented. So those are out of the question.
-Spartans ARE hoplites, they fight like hoplites NOT phalangites (which by the time Thermopoly did not even exist).
-The movie 300 DID NOT portray accurate Hoplite style of fighting.

Thermopoly occured in 480BC. Phillip II came up with the sarissa (or should I say improved) in 360-350BC. MORE than 100 years later.