Since he was not "convicted by final judgment" and therefore remains innocent in court of the charges against him, he therefore does not fall under this prohibition. This is from the legal perspective. Whether he really committed moral turpitude or not, that is a different topic.
(Hmmm...how about this? http://www.nytimes.com/1993/09/24/world/marcos-convicted-of-graft-in-manila.html)
Wikitruth
Fix The Philippines