Thats unfortunate- fixing something twice is never fun.
Aluminum in direct contact or thru moisture with PT wood results in al corroding. Replacing the siding with more aluminum would require some serious isolation. Or replacing PT with non preservative wood, means undoing previous work. Using a different siding materiel that wasnt subject to corrosion might be an option since it needs to be removed?
aluminum+and+pressure+treated+wood As to temporary fix, Eternabond tape likely would work. Assuming panel still primarily attached, though the tape is pretty strong. Some RV shops sell by the foot, or smaller than 50' rolls (5'10'20') offered by different sellers, Amazon Ebay etc. Not knowing extent not sure that metal patch needed. The tape should seal and keep from siding from blowing off- Temporarily.
Wish I could say I've never had to fix a fix that I had done.