E300 DT overheating after episode of high revs

[dtf]

Hello - the wife got the '99 E300 Turbodiesel stuck between two big trees - on ice - in the driveway going uphill . I worked the car for 45 minutes, really hard rocking and trying to drive it out of the nasty spot. Then I look down and see 120C on the gauge and shut the car down and pop the hood to cool it off. The fans were not cooling the engine even though they were going full blast. This morning it started fine but wifey calls and says the thing is over heating again on the highway. I go out and swap the truck for her car, send her off to work and call AAA for the tow. The oil level is fine and not contaminated - the coolant level is fine and still nice, clear and yellow - I'm thinking I burnt out the water pump with those high RPMs in freeing the car from the ice ?