Hahaha
You scared me! I thought something had happened to J!
If it's too fluffy, maybe you're whisking the mix too much (too much air gets into the mix). The box says 2-3 minutes at high speed. Try it a little less and slower (just make sure everything is blended and you don't get lumps).
As for the other thing, I always grease the pan (with butter, it's nasty on your fingers but I use disposable gloves now) and then coat it with flour (just a little to get the whole pan white and coated).
Then after it's baked wait until it's at least warm. Don't do it right away.
And check with a knife around the borders first to see if it's loose, if not, try separating it (be gentle) with the knife between the cake and the pan and then shake it very gently a little bit to get the bottom loose.
Good luck! You CAN do this!