QUITE so. If Greer didn't want this to turn out with Terri's death, he could have viewed the testimony of the Schiavos about her supposed wish to die with skepticism because it appeared so late, and because others testified that she never made any such statements and one testified that she made an opposite statement.
Or he could have disqualified his status as guardian for a conflict of interest.
There are a myriad of things he could have found if he didn't wish her to die in this gruesome manner.