Not entirely. While I have no doubt it was a good sweetener, there are more pragmatic things in play here. All the big handset manufacturers are doing a phenomenal job of fucking up Android. TouchWiz and SenseUI are an abomination - there to fight with other manufacturers over fluffy software bullet points on the back of the box rather than furthering the cause of Android and competing on useful features.
I dunno, there seems to be only one thing behind this, Google bought Motorola simple to pick this fight, so I can't see them backing off after some friendly licencing settlement is arranged, they're clearly out for blood.
Google, I hope, woke up to the fact that if they actually want an Android handset that can stand up to Apple they're gonna have to make it themselves. No small order, as they're not a great design outfit really.
Having worked as a second party dev building pre-loaded apps for Samsung, HTC, and LG it really is sorrowful how badly they've mangled Android. I was happy to, professionally, leave them all behind.
Always fun to see a couple of behemoths acting like fucking infants in court though.