The problem with GameStop - and meme stocks is general - is that they're fundamentally not worth the price they trade at (as you know) while ever they are a meme stock .
So it's impossible to put any sort of reasoning into why the stock should move in a given direction, ergo it's gambling.
Your DH's only hope is that there's another short squeeze, driving up the price, but I'd say that's monumentally unlikely given that:
a) hedge funds won't fall for that one twice and hence aren't holding short positions in GME
b) any planned pumping of the stock to squeeze the short holders is going to be monumentally expensive compared to last time it happened - it was pumped up by 2,000% (!) - so there's no incentive for a group to get together and try it again as it would need vast sums of money.
Think of it this way, if on average people bought in at $100 per share, it would need pumping up to $3,000 per share to flush out the equivalent shorts this time - that would value this ailing, has-been company at $240bn - more than Coca Cola 
So yes, your DH would be back in the black if the stock price merely doubled (!) but why would would it double other than if part of another short squeeze, which I'd bet my house on
can never, ever happen again.