Thats a bugger, but at least you are OK, thats the main thing.
Re coolant, you should be able to drain it in to a clean container from the drains under the bottom of the car, in the metal pipes that are under the fuel tank. The front radiator also has a drain tap. If you are careful you should be able to avoid contamination and save the majority of it.
The drain in the block will be hard to catch the coolant cleanly, and not all motors have the block drain.
Cheers