You knew there had to be a logical reason for that bizarre scene back on Naboo. Here it is!

Just make sure you preserve your memories of everything that's happened in your character's life. They could be important later on.

Transcript

GM: Anakin, the reek charges you. It's a huge bull-like creature with three horns.
Nute Gunray: This is barbalic.
Anakin: I wait until the last second and Force Leap on to its back.
[SFX]: Graaahhhr!
Padmé: Awesome, that's phase 3.
Nute Gunray: But quite exciting. Tell me, has a particurar beast been assigned to each prisoner?
Count Dookû: Oui, most observant. Ze ferocity of ze beast is matched to ze magnitude of ze crime.
Anakin: I wrap my chain around its horn.
GM: It rips the chain free from the pillar. Do you have Riding skill?
{flashback panel showing Anakin riding the shaak on Naboo}
Anakin: Yes, I practised it back on Naboo.
Padmé: Yeah, when we fought that landshark.
Anakin: Is that how you remember it?
Padmé: You were critically injured and I revived you with...
Padmé: Oh...
Padmé: Yeah...