I don't mean to be a jerk, but I'd question your readings here. 1.050 sounds about right for an OG. 1.020 is a little high for an SG, you may have had a stuck ferment. But there is no way it went up from 1.020 to 1.120 (perhaps you mean 1.012?). It's just a guess but I'd say your hydrometer might be getting stuck along the side of the test tube.
Also, there is also no reason to have checked the gravity after 2 hours in the carboy. Once you rack to secondary most fermentation is going to stop. You may rouse the yeast a bit and drop a couple more points, but that'll be it. In general you should wait until fermentation is complete before racking to a clearing tank. If you do have a stuck ferment, the best thing to do is rouse the yeast in the primary and given them more time to work rather than racking early.
And now we go AG!
On Tap: Nadda
Planning: Extra Special Bitter