1st I feel for you I hate when that happens.
The freezer water trick does work but for that amount of damage you will have to do it a few times to get the stinger in better shape.
The only problem I have had with the freezer remedy is the more times you have to refreeze it the more the whole pipe will swell.
I would give it a try, what you have to lose.
Maybe put a little JB weld between the stinger and pipe next time