Afraid of the answer.....

[911monty]

Actually this may be a good thing and I was half expecting this to happen.Remember the comment about the hose from the oil cooler? If the leak had been from the tank it would have meant replacing the tank. This would have cost several hundred dollars. I suspect that somehow the hose which blew apart may be connected to the wrong hose, possibly the drain hose. This might only require switching some hoses. Yes I know the hoses are different diameters and this should be unlikely but at this point anything is suspect and needs to be checked and confirmed.
You may have to do some feeling by hand or use a scope camera to confirm.
There are 3 hoses from the manifold to the tank. The hose in your pic on the left should attach to the top nipple of the manifold. This is the smallest diameter hose. This is the connection from the top of the oil cooler that the fitting broke on and should go to the purge valve. Of course the bottom hose on the manifold should be the drain hose.
Please follow the hose from the oil cooler, thru the broken fitting and to the top connection of the manifold.
It is probably easiest to determine that the drain hose goes to the bottom fitting. I believe you can see this from below.

I see JFP beat me to it while I was typing. Thanks!