I'm still worried, though, because I posted this same question to /r/AcademicPsychology on reddit and got this response:
"It depends on the program and faculty. Some might not care as long as your grades were good and your other credentials are competitive. Others might question why you did this and even specifically ask you about it should you get interviews. If you tell them this epiphany you had about class sizes they would (justifiably) be somewhat concerned. They might be worried that you'll have a similar epiphany in their program and leave, for whatever reason. Grad school spots are very limited, especially in funded clinical and counseling doctoral programs, so they don't want to waste them on people who aren't fully committed or might have changes of heart later on and leave them holding the bag.
I'm not giving any advice, because it's difficult to tell, there are so many variables involved."
Is this true? Should I not take this chance if I want to go into more competitive clinical psych programs?