I think a poster further up had at least a decent idea for curbing this behavior.
It should count as a suicide. The problem of course is coding it, so the game knows who got rammed, and who did the ramming.
But once that is done, the rammer should loose rank. If the pilot is already ranked at the bottom before he tries to become the divine wind, then he should spawn with half the amount of starting credits. Each subsequent time he kamikaze's in the same match, his starting cash should be halved again. Once his teammates get sick of floating him cash, he wont be able to continue. Or, after a set amount of rammings (say2 or 3), he should be auto banned (ban is coded so it kicks in right away). If the pilot has only rammed once (or in a rare instance, accidentally rammed someone), he should be allowed one disconnect and reconnect. This is because DCs happen. But if he tries another time (rams and then logs off), his profile should be auto banned for the remainder of the match.
The target pilot should get neither a penalty nor gain anything. It would be nice if he spawned with all the credits he accumulated before dying plus the cost of his aero asset. In other words, he can be back up in the air with the same aero and the no loss of accumulated cash, as if it never happened. This would deff discourage aero ramming as a tactic since it not only hurts the rammer but his no ill effects on the "rammee". It would be tempting to give the target a kill, but it would be unearned, and I prefer to see that pilot just head back up into the air as if nothing happened (in terms of stats and money).
Of course, those are just suggestions, and I'm sure other, more experience players can add/change it all for a better system.