Sledge driver's order lodged and quickly spread (10)

I believe the answer is:

mushroomed

I'm a little stuck... Click here to teach me more about this clue!

'sledge driver's order lodged and quickly spread' is the definition.
I can't tell whether this defines the answer.

'lodged and quickly spread' is the wordplay.
'lodged' becomes 'roomed' (I've seen this in another clue).
'and' says to put letters next to each other.
'quickly spread' becomes 'mush' (I can't justify this - if you can you should believe this answer much more).
'roomed' put after 'mush' is 'MUSHROOMED'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.