Second thought was, why spend the money when I am never climbing again?
,
Never say never!
Essentially, you've got down on your own power. You will psychologically recover from this "adventure" and may resume hiking in the mountains starting with less ambitious goals. (You definitely need to understand the root cause of this back pain and an advice from a physician may be helpful.)
Could you please clarify your original plan?
By what time have you planned to reach Mt.Whitney summit and what was the planned round trip time?
