Philanthropist was having a bad day, and with only one home planet with 3 ships, started an encounter against Squee, risking everything he could spare (2 ships). Being so low on ships, he didn't dare not invite Animal, so Animal joined in with 2 more ships. Squee's power then required Philanthropist to throw 3 ships into the Warp to continue the attack. Philanthropist chose yes, and threw all his ships into the Warp!
We then had an attack where:
Offense has 0 ships
Offensive ally has 2 ships
Defense has 3 ships
This raises many questions:
1. Can a player remove ships from the hyperspace gate when taking losses (for any reason)?
2. Can Squee's Power cause this to happen?
3. Can attacks (in general) continue if the Offensive Player loses all ships before cards are revealed?
4. Can attacks (in general) continue if only Offensive Allies have ships remaining before cards are revealed?
5. If no, does the Encounter end?
6. If the Encounter ends in this way, do the Offensive Allies return the ships to their Colonies (as if the Main Players started a Negotiation, and Allies go home)(This is how we resolved it the interest of finishing the game quickly).
I believe these are important questions because they cut to the core mechanics.
I would love to hear an official ruling from FFG on this.