Confessing 'sin'?

Last week I worshipped at a local Presbyterian church. In the course of the liturgy, the congregation recited a general confession of sin that contained this line: "When we exclude others with our theology, language, traditions, and practices, gracious God, forgive us." This could be interpreted in one of two ways. First: "when we put up unnecessary and unbiblical barriers to fellowship, gracious God, forgive us." Or second: "when we claim that only those in Christ are saved, gracious God, forgive us." I will not attempt to speculate as to which meaning was intended.