Assuming that the governor is acting within her lawful authority—I would think she is, but I’m not an attorney—it’s hard to see how this business owner isn’t in legal trouble.
That’s to say nothing of the public relations nightmare. You’ll have some—it sounds and looks like dozens turned up—who are supportive, but polling shows a substantial majority in favor of maintaining a lockdown. Those people are likely to remember that Glamour Salon and Tan Republic (same owner) were willing to jeopardize public health and safety for money. (Already somewhat true of Tan Republic given what we know about tanning beds.)