Bigelow said last week the tweet was in reference to uniforms.
USC is one of only a few schools that have not joined the popular alternate-uniform craze, led by the Oregon Ducks.
The Trojans are the only bowl subdivision team that has never had last names on jerseys.
Bigelow said the locker room was “divided” about uniforms.
“Some guys care for it, some guys couldn’t care less about it,” he said.
Bigelow said he found himself “on either side of the spectrum from time to time.”
USC players did wear a new metallic-tinged helmet in some games last season.
“It was a way to kind of update our look in a sense, but yet hold onto our tradition,” Coach Steve Sarkisian said in October.
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