Based on that rumor, when Star Trek: The Motion Picture was being made, newspapers reported that Nimoy stated in I Am Not Spock that he did not want to be involved with Star Trek any longer.
bˈeɪst ˌɔn ðæt ɹˈuːmɚ, wˌɛn stˈɑːɹ tɹˈɛk: ðə mˈoʊʃən pˈɪktʃɚ wʌz bˌiːɪŋ mˈeɪd, nˈuːzpeɪpɚz ɹᵻpˈoːɹɾᵻd ðæt nˈɪmɔɪ stˈeɪɾᵻd ɪn aɪɐm nˌɑːt spˈɑːk ðæt hiː dɪdnˌɑːt wˈɔnt təbi ɪnvˈɑːlvd wɪð stˈɑːɹ tɹˈɛk ˌɛni lˈɔŋɡɚ.