Elon Musk may love Dogecoin but it doesn't mean he's the only one capable of such. Dogecoin has its own community and so has some use cases as a payment solution. So, yes, it can still pump without Musk's intervention. After all, it has doing that before Mr. Musk's intrusion
He didn't love Dogecoin, he just really found something new like a child finds a new toy and gets excited until he gets bored (and he's bored of it now). He'll move on to a new altcoin some day or create his own, just you wait.
Credit to him though, nothing pumped doge the way he did. Who could ever imagine it would get to today's BTC price?