OK, there are two options for continuing the game:
1) Carry on with just three players. I'm not adverse to this by any means, but it might limit the RP opportunities between the PCs if there are just the three of you. If you don't think that's going to be a problem, then I'm happy to carry on with three.
2) Recruit another player or two. This would up the number of PCs, but would also entail some delay in restarting the game. This time I'd be inclined to pick and choose which players I took, looking for people I know to be reliable players.
As I've said, either is good with me. Really it's all down to if you want a few extra characters in the game or not.