(see Fig. \[tics-02-08\]). This is not observed in the 2000 (see @wij01) and 2008 re-flares, which show an erratic change of peak luminosities. In the re-flaring state, the luminosity can change by $\sim 3$ orders of magnitude on time scales of $\simless 1.5$ days (see Fig. \[tics-02-08\] at MJD$\sim54756$ and @wij03 for a similar observation in the 2000 outburst).

The fast decays and the pulse phase drifts {#fastdecayjump}
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Close to the end of the 2002 outburst, the pulse phase of the fundamental was observed to drift by $0.2$ cycles in just a few days, in coincidence with the beginning and the end of the fast decay [@bur06]. @har08 showed that a similar drift was present in 2005. Here we show that both phase drifts start and end in coincidence with (or very close to) the beginning and the end of the fast decay.

In Fig. \[decay\] we plot the pulse timing residuals of the fundamental and the 2-10 keV X-ray flux in mCrab. In the 2002 outburst the pulse phase drift starts exactly when the fast decay begins.

In the 2005 outburst we see the phase drift beginning close to the beginning of the decay, although given the large 