I doubt it can have any negative effects compared to not doing the late D-rest.
My reasoning is that active lager yeast at high temperatures produce less than optimal output. For a D-rest, the other effects (cleaning diacetyl) are more important than avoiding the small amount of ester/whatever production.
If it's too late, the only risk is that too much yeast dropped out, so it may not be as effective a D-rest as it could have been. It'll likely still do some good. Many lagers don't even need the rest (though some, like the Bock I just raised temperature on, certainly do).