i think, he tryed to say that he might get cought, Kizaru and Pacifistas were on the same island.. now i remember the moment when pacifista wanted to beam luffy but was killed by Kuma...he didnt betray Dragon and its a releaf, it was mentioned before, that Dragon had spys and who wouldve thought its V. Kumakuma said he don't have much time...i think he meant that vegapunk is gonna change him to complete cyborg....during the war ,do you think he was changed completely or he was just acting to be with marines....