i can grasp the corruption in sound audio, but how'd it get out of sync? 

what seemed to disappear in the track was the pickup up note that it starts on, which both precedes and finalizes the loop. i'd notate this in 4/4 and make the loop four bars, so you'd end up with the following if you were to notate it:

x |: 1... | 1... | 1... | 1..x :|

...with the pickup note where the xes are. so, it's just an extra quarter note at the front of the pattern...

i don't know how, but something got confused somewhere, as it sounds like the pickup shifted to the one, which just put everything out of order.

like i say - this is very weird...