Man that's a bummer. Doesn't your home owners insurance cover your well? I'm on the other side of the state and we're getting some shakers here as well.
It's truly a shame to get rid of that nice a rifle. Good luck with the sale.
I would get a second opinion,Your water pressure sholud not drop because of a broken casing.the tremors may have jarred the pump and caused a crack or hole in pump piping.I found the nipple that is in between the plastic line and the pump rust through and causes problems like you describe on submeresible pumps.