I would say that any "quick fix" is likely not to hold because the cooling system is under a lot of pressure at operating temp. I have read in other posts, however, where people have used JB Weld for quick fixes such as this one. You could JB Weld the little broken plastic end back on the radiator that way you could still run your hose. Personally I wouldn't do it because I wouldn't want risk my nice MB sitting on the side of the road with a nice plume of smoke coming out from under the hood (plus the subsequent hassle...tow trucks, late, etc), but I guess if you NEED a car and have no other way of getting where you need to go....worth a shot I suppose.
'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.
"A Mercedes-Benz is like a fine wine, it only gets better with age."