I don't know if this could really work, but it might.......
Then do it this way.
Host your draft on CBS. Put in a ten minute draft nomination time, or whatever the maximum is. If it's not long enough, just use the pause and resume functions. Then whenever someone gets bought, nominate him as the commissioner and put in the winning bid for the winning team. Your leaguemate could follow along in the draft room and see as it goes.
It looks like all these things are possible in CBS.
* You can suspend the draft for any reason by clicking 'Suspend'. You can then resume it by clicking 'Resume'
* You can easily back out the last pick of the draft for any reason by clicking 'Back-out Last Pick'. You can do this repeatedly to back out several picks.
* As commissioner you can bid for any team by clicking 'Bid for Team', then selecting the team you'd like to bid for
* As commissioner you can put any team on autopilot if you need to. You can also select a persona for how the autopilot will bid for them
So you would be bidding offline, but entering the results online. It might even help out the rest of the league follow along. But it is extra work for you, but that's sort of going to be true however you do it. I think your leaguemates are just going to have to accept a little pause between each pick as you sort it out as the price of accommodating the guy who can't make it.
It's not ideal. But it looks possible.
0-3 to 4-3. Worst choke in the history of baseball. Enough said.