Such waiver shall not apply if it can be proven that the accident was caused, in whole or in part, by a tort-feasor who operated a motor vehicle under the influence of drugs or alcohol, or who is convicted of involuntary manslaughter under subdivision (2) of subsection 1 of section 565.024, or assault in the second degree under subdivision (4) of subsection 1 of section 565.060**.
§ 303.390, RSMo