The gemara asks, acc. to opinion that nedarim and nedavos can't be brought on yom tov, what would be if one violated shechita, would you sprinkle the blood. The gemara says that if the meat is around all agree that you can sprinkle the blood (and violate a shevus of zrika - see pesachim 65b) in order to eat the meat on yom tov (ochel nefesh pushes off the shevus of zrika).
R' Yisroel Gordon raised an interesting question. The gemara implies "avar vishachat" that he intentionally violated the prohibition to shecht the korban, so the meat should be assur m'drabonon to eat just like one who cooks on shabbos b'mazid the food is assur (beitza 17b!). If it is assur to eat the meat there is no longer a heter to do the zrika (acc. to rava)? He suggested that since there is a mitzvah to eat kodshim, we can apply mitzvos la'av l'eihanos nitnu to allow eating the korban. To me it seems that this would only work with the chiddush of r' moshe (o.c. 1:126:3) that we are magdir even the issur d'rabonon of ma'aseh shabbos as an issur hana'a so that the heter of mitzvos la'av leihanos nitnu would apply. If it would be a regular kenas derabonon not to eat it, there wouldn't be a heter of mitzvos la'av leihanos nitnu.
I couldn't find anyone else (i.e. tzlach, pnei yehoshua, sfas emes) address the question.