Necessity is the Mother Of Invention Joe...Looks like something I would have seen at my Dads old camp on a lake.
He knew less then nothing on how to fix anything but was to cheap to hire someone to fix things right and tried to fix it himself.
Some examples: he was trying to remove and replace a water heater without shutting off the water, or draining the tank, and was using a Weller electric soldering gun to unsolder the copper pipe.
He was so proud to come up with the idea of using electrical tape to hold the trigger.
He had a few tabs break off his 3 tab shingles, so his idea to fix this was to just buy some as seen on TV sealer, spray it all over the area, and just lay new shingles over it without removing the broken shingles and weaving in new ones.
Every year in the spring he would spend days trying to half a** patch all the water leaks, I got tired of it and replaced all the old copper pipes with PEX and added a low point drain, and he never had to deal with it again.
HA! But you make a good point... this probably did happen at 2am on a Sunday morning, all the guy had was a box of parts and the nearest town was and hour away.... Sound like something I would... I mean a friend of a friend would do. Every body loves those remote cabin get aways in the mountains until Sunday morning at 2am.what the f%^&, I would redo it completely, I would turn off the water at the curb stop, Install a new ball valve in copper and little higher and then make a proper connection to the pipe. All this junk is going to fail at sometime and the shut off valve will not close, this will happen at 2 o'clock in the morning when the water pressure is the greatest.