There is a big difference between bottle conditioning and filling from a tap. When bottle conditioning the yeast will produce the CO2 which will build up in the bottle relatively quickly compared to the speed at which it gets absorbed. Once it is absorbed then it isn't a big deal to carry it around - which is why growlers are transport vessels and are not made to hold pressure.
You will find people on here that say they have done it and didn't have bottle bombs, but for every one of them then there is at least one other person that has cleaned up glass shards. It is hit or miss when you use non pressure vessels to hold pressure. It doesn't mean that none of them will work, but it means that they were not designed with that in mind, so don't be surprised when it fails. Even if you buy 10 of the same bottles, 2 of them may work and the other 8 fail.
Regarding what the OP should do - if it were me, and I could get my hands on bottles, caps, and a bottler tomorrow I would put the growler in the fridge and/or put an airlock on it to prevent it from building up pressure. Then use your racking cane to move the beer to bottles.
If you can't and or don't want to mess with that and are willing to take a chance then I would put it in a rubbermaid container with a lid firmly on it so that the cleanup will be easier if necessary.