Ok, now I was interested in this "Pat Symonds doesn't get along with Alonso theory" so I thought let's be open minded and see if there's any truth to that basis. So here is what I've found:
1) Pat Symonds: In May 2007 http://news.bbc.co.u...one/6655491.stm
Design chief Pat Symonds worked with Alonso at Renault and said the situation may be getting to the world champion more than he liked to admit. "The thing he really hates is being beaten by his team-mate, and when it happened with us he could be come irrational - I suspect that will be the same again," he said.
2) Pat Symonds: Again in October 2007 http://www.duemotori...Pat_Symonds.php
Symonds, who worked at Toleman with Ayrton Senna, and also with Michael Schumacher at Benetton, describes Alonso as "one of the most difficult drivers to understand" that he has personally encountered.
"He's a very complex character," the Briton said, amid Alonso's seemingly broken relationships with his current team boss Ron Dennis and teammate Lewis Hamilton, who this weekend in China could wrap up the title. "He only had one very, very small chink in his armour when he drove for us," Symonds explained, "and that was the inability to accept being beaten." "Actually that's a really good quality, but it was the one time he was perhaps slightly irrational -- when Giancarlo (Fisichella) beat him, for example." "I think that what we've seen this year, with Lewis unexpectedly giving him such a hard time, it's opened up that chink a little bit," Symonds said.
To also be fair, in that same article Briatore as corrupt as he is, does make a possibly very valid point about Ron Dennis and how he didn't handle things well in his opinion.
3) Here is where it gets very interesting. Steve Nielsen, Renault's sporting director had this to say in early 2007 http://www.huliq.com...-win-then-title
Alonso's former team manager at Renault would be surprised if Hamilton's rise wasn't creating some self-doubt in the Spaniard. "In his career, he has always been comfortably faster than teammates, and now he's got a guy who's his equal, if not maybe a little bit quicker," Steve Nielsen said. "The few times we saw Fernando really under pressure were when his teammate beat him. That's the situation he's in now."
4) Steve Nielsen later in 2010 http://www.autoevolu...take-22053.html
“We know what happened (at McLaren), and he came back. I actually think it was probably a mistake. I don't know if he agrees with me but he knows I love him,” said Nielsen in a recent interview with eurosport.fr. “If I had been his manager at the time, I would have told him 'Listen, you have to stay and beat this guy (Lewis Hamilton)'. 'Firstly because you have the best car now, secondly because your best chance to be champion next year is to stay at McLaren',” added the Renault boss.
Now would any person, let alone the team's sporting director and someone who openly proclaims his admiration for Alonso, say that he should have stayed at McLaren if he truly believed that they would not give him equal opportunity? Of course not. In fact, in the above he complements Alonso's great driving talent because he openly states his belief that Alonso could have beaten Lewis based on talent/experience/determination if only he didn't let his mind overcome him.
The writing is on the wall, and for all the flak Ron Dennis gets for 2007 and I have no doubt he deserves some of that as he probably could have managed the situation better, it seems pretty clear that it was caused by one 2 x WDC expecting to be treated as No.1 whilst the other was out to prove he was definitely not a No.2.
Having said that, I think Alonso has probably looked inwards and learnt a lot from that year and may not react so badly if Massa does beat him in any races. Not that I think that will happen very often this season, though if it does I guess only then will be sure if he has learnt. Actually as Nielsen said, I think the inability to accept being beaten is a great thing if used positively to improve performance rather than used negatively to become paranoid and which decreases performance.