" But it is not the way to go if you truly have plantar fasciitis."
FB,
If you bothered to read my original question it was asked directly to Adrian, and was not to 'diss' anyones attempts at an 'alternative' treatment. If you've tried everything and it's not worked, of course you're going to try any alternative to get rid of the pain (or god forbid that the original diagnosis may be incorrect and not be PF at all!) If the only information the patient gives you at the initial consultation is "I get heel pain", this could be a myriad of problems, as well as plantar fasciitis. I was purely trying to give an educated and experienced answer to the question. And yes, I do believe that barefoot running is counter productive as a treatment modality for PF, in patients who have never been a barefoot runner (different for patients who already combine barefoot running as part of their training programme).
Several people in this thread have mentioned all sorts of different things to try to address PF, and it sounds as though you've tried most, but don't be so confident to think that "I don't need that, I'm strong enough already". Similar to what Tom discussed, I use kinesiology tape on several patients with PF and have had some great results. I have tried several different companies but have found Rocktape H20 to work the best on the plantar fascia (I have absolutely no link to them whatsoever, I've just found they've given me the best results for my patients). I found with this version of the tape they make it sticker that their normal tape, therefore allowing for better support of the PF with less likelihood of it coming apart (those sweaty feet can be a real issue!). This can work very well diagnostically, indicating that you may therefore benefit from some orthoses (semi bespoke or bespoke - a rant for another day....). You said you had orthoses, but when were these prescribed for you and what were they originally prescribed for. If you had your orthoses prescribed years ago, but you've only had the PF since January, the orthoses potentially are no longer "doing their job" and may need to be altered.
You also mentioned cortisone injections. I've found some patients whom I've injected have had brilliant results, others a minimal benefit (and you can't keep injecting the patient as there's evidence to show that it can increase the chance of a rupture of the plantar fascia).
In answer to the change in your running style - if you're the accomplished athlete that you say you are who has never had a problem running for years and years, why would you want to change from heel striking. It will not be this that has caused your PF.
Cheers,
Ablefeet 
Edited: 31/08/2012 at 10:33