You should be able to get it back up., we had the same problem with our Focus RS
You need two people, a long bolt (an old head bolt is perfect) and a couple of pairs of mole grips.
take off the lower steering column trim to expose the column.
Screw the bolt into the end of the column, one person goes under the column. Their job is to clamp the column with the grips when the second person pulls the column back up by gripping the bolt and pulling upwards.
When they've pulled it up as far as possible, clamp the column under the big spring to stop it dropping back.
Now it's clamped in place, get the steering wheel back on and use another bolt (you'll probably need one about 75mm in length) to pull the column up the remainder of the way.
Once it's up, make sure the steering lock is on to hold it in place, loosen the temporary bolt and replace it with the correct one.
If you take the wheel off again, make sure the steering lock is left on to prevent it dropping down again.
Hope that helps, good luck