Soldato
i think massa put himself out of monaco by driving on the marbles in the tunnel.
And what put him on the marbles? Lewis was right up the inside of him, he'd just clattered into Massa at Loews (or whatever the hell that hairpin is called these days) so the Ferrari was already damaged, and whatever else you might want to say about Massa he's not entirely devoid of braincells - he isn't just going to drive onto the marbles given that he would know it would mean a big accident. Look again at when they go into the tunnel - the two come into the first camera shot side by side with Massa on the outside, already on the marbles long before he finally loses control and slams the wall. His options at that stage are:
1) brake to let Hamilton get away from his inside and move over (and braking on the marbles would probably still result in losing control)
2) move over on Hamilton, causing another collision and almost certainly ending both their races
3) try and hang on around the outside (which he seemingly did)
Nice of Lewis to leave him with three very bad options, wasn't it? Lucky for the McLaren team, Massa didn't go with option 2) or they'd have had an even bigger repair bill from that race