Big Phil Makes His First Major Blunder

Hello guys, its been one of those long absenses from me again. I am so hooked offline that this blog and other of my blogs have suffered from that.
Well, if i could help, i certainly would not neglect them. Back to the issue on ground.
I am not a Chelsea fan, but i could contain my anger when Scolari substituted Mikel in their clash with Arsenal at the Bridge. Some people will think that am screeming because i am a Nigerian, Mikel being a compatriot.
Let's face the fact here. Once Mikel was taken off the field, the game swung in Arsenal's favour. Chelsea's midfield collasped, and they had nobody to win the balls for them like Mikel was doing. Ballack wasn't in the game, and Deco of all people was just a shadow of the player we all know him to be.
Why do coaches make such blunders, take out the one player that stabilizes your game and bring in players that contribute little or nothing to the team in the end.
I know that Chelsea were a bit shaky before the clash, but i really wanted to see Arsenal beaten. I want Wenger to know that it is good to play good football, but that the premiership will not be won by "fine" little boys. All the same, kudos to Van Persie, he grab his chances with hands.
And by the way, i think the referee was really harsh C. Ronaldo over the ball handling incident. How can a player of Ronaldo handle in such a manner?, if you ask, i think the referee was too harsh.