Another possibility is that someone else petitioned one of their POS for exploits or whatever.
Also, could be human error on Sharkbait's side, joined the wrong goon corp on accident, hence the CEO not knowing about it, but that's just speculation.
It's actually not so strange, or so rare, that this happens.
Say your POS(Player Owned Station(or Structure), deployable thing at a moon in space) got bugged(Not uncommon) doing whatever, such as super-capitalship construction, it might need a DEV/GM to join the corporation itself, try to see exactly what the bug is from the corporations point of view, then fix it. But the CEO not knowing about it is indeed strange, maybe one of his directors petitioned, logged off, and the CCP employee had to join to figure it out.
As for the petition being deleted, my guess would be as good as anyone's.
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Another possibility is that someone else petitioned one of their POS for exploits or whatever. Also, could be human error on Sharkbait's side, joined the wrong goon corp on accident, hence the CEO not knowing about it, but that's just speculation.
As for the petition being deleted, my guess would be as good as anyone's.