I would love to hear the details on what differences they have...specifically why he fired his son.
According to this and this, Junior was sacked because of a "lack of shared vision and the jeopardy in which this is placing this entire ministry."
Reading between the lines, it appears Junior simply failed to attract the necessary audience (and donors) to the TV broadcast which sustains the church during his three year stint at its helm.
The younger Schuller blamed the program's format and wanted to change it in in a manner which would supposedly make it appeal to a younger audience. The older Schuller felt the show's format was just fine and blamed Junior for failing to deliver the ratings. The older Schuller won the boardroom battle.
Bottom line: It was money, not doctrine.
In one of those referenced articles you supplied, I saw this quote...
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The real minister’s name that we honor is Jesus, not Schuller,” he said to thunderous applause.
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And that’s definitely a lie. It was a lie when the elder Schuller was running everything himself, as one could easily tell from listening to his complete absence of Biblical doctrine from his sermons.
And now, in *contrast* to his son using the Bible more and appealing to its authority, it’s apparent that the elder Schuller is still leaving the Jesus Christ of the Bible out of his messages (and by proxy, those others who are preaching in his stead...).
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Matthew 7:21-23
21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven.
22 Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’
23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’