Sorry to hear about your uncle.
It's ok to take a few days "off" when you are dealing with something like that.
You are right not to beat yourself up about the gain. I highly doubt it's fat anyway. You would have had to eat 15,400 calories OVER maintenance! Most likely you've had more sodium than usual and that plus TOM is causing water weight.
Start over tomorrow, like you said, watch the sodium and drink a lot of water. That weight will be right back down in a day or two.