virtual crossing of a picket line?

Another union is planning to picket my place of employment on Thursday. I do not feel comfortable crossing a picket line, even if it is not my union that is striking. So I am not planning to come into my office on Thursday. The question is, can I work from home? Or is that some kind of “virtual” crossing of a picket line? Now that so much work is done remotely, via email and phone, the lines between office and “out of office” have been blurred, and I’m not sure what would be acceptable or a violation of solidarity.