Firstly, this will only work for druids as it requires flight form.
Now, the quest starts at Bezzle Blastbolt at about 74.2, 24.6 in Icecrown and sends you to Crystalsong Forest.
Here is a picture of where in Crystalsong:
http://img145.imageshack.us/img145/7921/mapc.jpg
Once you are at the location mentioned above, you will find the Oaks you need to chop down.
The Oaks look like this:
http://img201.imageshack.us/img201/3903/oak.jpg
Commence your chopping, towards the end of the chopping cast bar is where you should use flight form, if you used it at the correct time you will take off, and collect your lumber mid-air.
Here is a picture of where you should cast flight form in your cast bar:
http://img147.imageshack.us/img147/2218/barm.jpg
I hope that this is of some use to someone, it's not much but I thought it could be useful to someone, help them complete it faster or whatever.
Also while writing this I thought something similar could be useful for hunters, if you dismiss your pet before cutting down trees, and then using feign death after the Angry Oak Spirit spawns, it should despawn.