But they were already due a recess between 13th September and 8th October for their yearly jolly at the seaside[1].
Having just returned from their summer recess between 20th July and 5th September.
Proroguing parliament ends the parliamentary session. Any work in progress, debates on bills and what not are cancelled as void. A new session of parliament starts from day one on everything, with a Queen's speech, State Opening and what not. That's why toward the end of the parliamentary year there is often a rush to get matters concluded and bills enacted before prorogation. Coming back early is much more difficult.
This move effectively turns the whole parliament into a one issue organisation and disables debate.
Makes perfect sense? /s