Well I wish you well, and that your resample of PCR will be PCRU again. Coz from many post I notice, if a patient able to last for so many years of PCRU, most probably you will sustain without progression. Base on the statistical model of evolution theory all the LSC will eventually push out from your bone marrow. Guess you could re-sample your PCR with other lab.
Base on the -ve slope theory of LSC cells reduction, even the slowest slope will bring you to towards non reoccurance region and hence you could reduce the dosage for trial first and monitor with DNA PCR. As there is finding on healthy individual with BCR-ABL in the % of 1 in 10 Million - 100 Million.
So I think you may be functionaly cured... hope for the best.