So this means a Christian can join a gay rights group and speak against the gay lifestyle as a sin or the gay rights group will lose its funding. </s>
As I interpret it ... yes it does.
Despite what you might read in the mainstream media, the court did not rule that the classic nondiscrimination policy (which is in force in hundreds of universities) trumped the student groups right to freedom of association. That issue was left unresolved. Instead, the Court ruled that the all-comers policy (which is in force virtually nowhere) was constitutional but only if it had been applied equally to all groups on campus.
So CLS has not yet lost its case. Despite an unfavorable ruling on the all-comers policy, it can still prevail on remand if it proves that the university did not apply the policy to all student groups but instead specifically targeted CLS. We have powerful evidence that the university has, in fact, targeted CLS.
I believe that you just described a hate crime/s