There are two kinds of accidental racisms. The kind where the speaker means what he says, but does not identify it as being wrong. The second is where the speaker mis-speaks and doesn't actually mean to convey what the readers see as racist. I believe this is a case of the second.

My language isn't entirely confined to reality all the time. Sometimes there's crosstalk in inadvertent ways.

Sorry for any hurts.

Accidental deliberate misunderstanding is still deliberate misunderstanding.