No, the only one that is available to date is WAR OF THE FLOWERS. (Via amazon's Kindle, I believe.)
None of the others are available in e-book format at this time. (If you discover some out there somewhere, they will be pirated versions. There has been no official release of Tad's other books in electronic formats.)
I have seen some illegal texts posted on the web -- there was a site in China, once, but it has since been removed. I also seem to recall seeing the MEMORY SORROW & THORN series in Spanish somewhere, but don't know if that's still floating around. These were unsanctioned copies, of course...
Sorry I couldn't be of more help on this. Keep watching for new developments, though. I don't actually have any news on anything forthcoming, but it wouldn't surprise me if Tad's work was released in an e-format one of these days.