The issue is (assuming what Jeremy says is true) that he was forced out after 1 month with no say in the matter, no agreement & no buyout of stock.
So while 1 month probably shouldn't be worth 50% of the company, you also can't just decide that you don't want your co-founder to have a stake in your company any more, and push them out.
At the end of that 1 month, they had both done equal work (about a month's worth) and had equal share (50% each). It sounds like (according to Jeremy's story) he still owns that because no one agreed to a formal change in ownership.
So while 1 month probably shouldn't be worth 50% of the company, you also can't just decide that you don't want your co-founder to have a stake in your company any more, and push them out.
At the end of that 1 month, they had both done equal work (about a month's worth) and had equal share (50% each). It sounds like (according to Jeremy's story) he still owns that because no one agreed to a formal change in ownership.