Results . . . hampered by a ..... chassis design which by all appearances is more dear to KTM than actual results, which could I imagine be infuriating for a rider who's been sold a big dream package of more or less unlimited all out effort to create a competitive machine - that turns out in fact to a mirage. Especially for a rider who was doing really well on the previous team; a rider who is in the prime of his life career-wise, who might just resent wasting time on machinery that is developmentally ........ by bad decisions made by corporate hacks.
Not saying this is exactly what happened, but certainly something like it.
Re: Ego, none of these guys regardless of how chill they may appear in front of a TV camera, are without HUGE egos.
And BTW - I don't hold to this idea that a rider should meekly sit around with his thumb up his ... saying nothing to the press that might shed a less than complementary picture of his employer. These guys are hired to race; not to be corporate shills.
If Rossi hadn't pissed and moaned to the press, who knows? Ducati might still be dragging around in 15th place with that stupid trellis frame.