I'm late to this shindig D:
A person making a random vote at the beginning of a three-day day phase (and the first phase of the game at that) doesn't strike me as a good reason for voting them with the intent to lynch. Why not FoS, gauge their reactions a bit, before placing a vote?
At least for me, it isn't so much the announcement that you are going to be absent that seems scummy, but more the statement that it's just coincidence that your declaration of absence coincided with Phoenicks' and you were weren't planning on using it to make yourself look innocent. It comes across as being hyperaware of how you might be perceived, which is something I think mafia exhibit more than townies.