I have this aloe that belonged to my mother. It is at least 20 years old and I have repotted it 3 times. Now it needs beheading and I am not sure how to tackle this.
Have a look at the following thread in an external forum: How to Cut Bottom Dry Stem of an Overgrown Aloe? • HelpfulGardener.com Gardening Forum.
Here's another (external forum) thread on the subject: My Aloe vera plant has grown into this shape and I was wondering if there could be a way to cut it safely so it will grow straight again : botany.