A teacher who held tenure rights and who was retired due to disability under AS 14.25.130, but whose disability (1) has been removed, and the removal of that disability is certified by a competent physician following a physical or mental examination, or (2) has been compensated for by rehabilitation or other appropriate restorative education or training, and that rehabilitation or restoration to health has been certified by the division of vocational rehabilitation of the Department of Labor and Workforce Development, shall be restored to full tenure rights in the district from which the teacher was retired, at such time as an opening for which the teacher is qualified becomes available.