Grindr Inc. illegally imposed a return-to-office policy last year that forced out half its staff in an attempt to thwart a unionization push, the US labor board alleged in a new complaint.The US National Labor Relations Board’s general counsel office is accusing the LGBTQ dating company of violating federal labor law by enforcing a strict RTO mandate in retaliation against workers who were trying to organize. The complaint, filed Friday, also accuses the company of illegally refusing to recogniz...