This is for all aspirants, this post just triggered me to reply.To all my folks out there. Yesterday was a terrible disaster, and with all the comments here I want to suggest and give my personal comments.
Lets approach the whole thing politically, instead of just numbers. If CIC doesn't want the score to break 440, then why would they reach 440, finish a draw with tie-breaker? if they wanted to clear 440 alone and not drop down further, then they would have cleared off entire 440 in last draw right? So I believe that staying higher than 440 is not the real call here. However, I believe that the reason for yesterday was that may be there was not enough 441+ and with a draw the score may have dropped below 437, which I don't think CIC is ready for yet. They may want to drop the score below 440 gradually, not from 440 tie-breaker to 436 or something. This is what I predict.
About Feb draw, where it went to 456 and then dropped to 446, just because it happened once, doesn't mean it will necessarily happen again. The score may never go up to 450+ or it may go there and never come back. However lets not think it will happen for sure, just because it happened once.
From the beginning CIC knew that after May or June they will have to drop the score below 440 to reach their desired target, they were trying to hold it up until end of May. Now they cancelled a regular draw, but they cannot do this anymore. They have their target and they need to break 440 by end of June.
CIC decides on a 'number' of ITAs to be issued before each draw based on various parameters of importance to them.
Once they have arrived at that number (for example 3500) the top 3500 applicants ranked on score (high to low) + application date (ranked oldest to new) are issued ITAs. The cut-off score is only a function of this activity: the score of the last candidate who has been issued ITA in that draw.
All candidates should actively work on improving their scores if possible (through better language scores, more education or work experience for both self & spouse) as well as actively seek opportunities for Provincial nomination by daily checking all province immigration web sites.
Spending too much time speculating & analysing the draw numbers IMO is not productive and similar to trying to figure out the lottery number that is likely to be announced.
Good Luck to all !