The isopropyl alcohol method is another old favorite of mine. It's cheap, easy, and effective. There are several variations of this method, but all basically involve soaking your pipe in isopropyl alcohol and then using something to remove the resin.
My favorite way to clean my pipe using alcohol is putting my pipe in a ziplock bag, pouring some alcohol into the bag, and then waiting an hour or two before shaking the bag and/or using a variety of tools to get to those hard to reach places. I only use 99% or higher concentration isopropyl alcohol on my pipes, and a bottle of it usually costs about a dollar. I really don't think you need to spend a lot of money on expensive pipe cleaning solutions, as alcohol works fine. You could also use Everclear grain alcohol if you have any left over from your Jungle Juice party.
After an hour or two (or even overnight), I take the bag and give it a few shakes to loosen up the resin. You could also put some salt in the bag to act as a mild abrasive.
Pour out the resin-infused alcohol, being careful not to get it on anything of value, as it will cause stains. If the pipe is still a little dirty, I like to use some wire pipe cleaners at this time, since the resin is still soft and easy to remove.
Once your pipe is completely clean, give it a good rinse in warm water, wipe it down with a paper towel, let it dry and enjoy.
This method also works great for cleaning bongs, bong stems, vaporizer handkits and other smoking accessories.
Check out our article on cleaning your pipe with boiling water.