It can be done as long as they don't have weakness or stand in the middle getting the vulnerability debuff especially this because they just die almost instantly. WHM makes it fairly easy since you can pop assize after they jump on the back then swiftcast cure III or medica spam and hope they get enough heal spam to stay alive while it dies. It's worth going for if it's low enough after the first go at it usually a LB3 alone will finish it off so you just need to keep them alive long enough to get it off.
