That stinks for you guys but if it makes you feel any better a lot of other states are dealing with it right now. In Illinois we have it pretty bad as well. The good thing is that 4,200 deer isn't a huge amount compared to what is killed by cars every year. Another good thing is that EHD is around most years and the first freeze usually ends it pretty quick. If you didn't get that in the last couple days then you should soon. I'm hoping we get a good hard freeze here pretty quick to end it here in Illinois quick! Another good thing (sorry, I try and think of the positives) is that with more water available right now with all the recent rains deer aren't congregating as much and drinking out of the same small watering holes and lakes.
Hopefully it only gets better from here on out!