If your situation (or that of your spouse or partner) changes, you should try to re-calculate your points score
before you decide to apply for permanent residence. To find out how to re-calculate your score, see:
http://www.cic.gc.ca/english/immigrate/skilled/crs-tool.asp
If your new score is lower than the minimum points score in the round of invitation from which you were invited to
apply, you should consider declining this invitation to apply. You should also consider declining this invitation
to apply if you no longer meet the minimum criteria for Express Entry.
WARNING: If you decide to apply in the above cases, your application may be refused and your application fee
will not be returned.
This was written in the ITA letter. That's why i think it is not a good idea to go with this situation