Grizzly

To sort of answer your question, no its sort of too far from being helped. Yet for time wise since thats all I saw you'll get more time than you may expect. I've seen worse because silver maple trees that have been topped or had big limbs cut are prond to rot in my area and in most cases the lagre cuts were not sealed. Depending on what you do to it in the future, It will only get worse in those spots you showed and it will eventually hollow out. Yet when it dies completely, get rid of it. once it dies the deteriation process will become more rapid, the mushrooms will start to become more vivid and will collapse which ever way the wind blows the way it want, when the day comes.

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