Well I thought the 2nd to last client .jar was saved on my home computer but I guess not...screwed that up. Oh well I think it may be for the best as hey0 was officially discontinued today and I still had some kinks to work out with it's plugins.
I'll start working with bukkit immediately but it's state is currently somewhere just over over 'half done' based off recent forum posts. the community is rallying behind it though since hey0 endorsed it in his 'i quit' speech.
I think we may still do the rolled back version thing with bukkit until API - today was just further proof to support my opinion that existing server addon support is BALLS. (hey0 is completely broken/fucked after the update and no one is fixing it)