Wonderful story KK.... Excellent writing! I am so happy for you... That is one of life's little experiences that will rest fondly in your memory forever, even if you never even see a glider again.
You grabbed ahold of the edge of the envelope that encompasses our everyday (mundane) life, took that little step, and warped the hell out of that envelope... Marvelous!!!
" I just talked to my doctor and he said to go home and elevate my feet... " Great line! If you do take lessons, you may need to befriend 'Bonzai Doc', and have him provide a written "Open Prescription" ... kind of a free pass from work with no hassles from the boss. What they don't know won't hurt you!
I wonder how many people who read your story thought to themselves... "Now that (or something else) is something I always wanted to try." ... And never get around to actually doing it! Now, stuff that falls into the stupid - dangerous category does not apply here... But we have to take care of these little loose ends before it is too late to experience them.