Fun with Jiffy Cake!

...except that it ended up not so much fun.
Somehow, I didn't do something properly.
I followed the directions, as usual;

• cake mix, egg, half the water
  
• mix on medium for 2 minutes
• add rest of water
  
• mix 2 more minutes
  
• pour into greased, floured pan
  
• bake for 25 minutes
  
• let cool for ten
  

But when it came time to remove from pan... it stuck. I had to pry the cake out. One quarter of the cake's underside stayed in the pan. DRAT! After a bit of wrangling, I finally managed to make the cake look edible, if lopsided. Once Mom frosted it, it looked MUCH better. Erk.