Eh. I'd speculate it's more likely one player asked for logs, and another player did the reporting for breaking the rules. Not in a "let's team up and get someone banned" way. Just, someone being a stickler for the rules.

Presumably, OP knows the stance on parsers, so, definitely shouldn't have been announcing to a group of randos that he was using them. That's basically the entire point of the policy in place. Don't make it known to anyone that doesn't want to know.

If it was just from one-on-one tells, well, at that point you could claim malicious intent probably. But, the risks are still known.