Blizzard says it's possible, they did add a spell to Razorgore while controlled that lets you sleep one dragonkin.
Which still makes it really hard to solo. But it's within the realm of possibility.
I'd suggest finding someone who doesn't need/want the same things you do and taking two in there. Gets much easier then, as one person can handle adds and the other can handle Razorgore.
When the ship lifts, all bills are paid. No regrets.