the question was quite clear and need no further complication..
i totally agree with darren.. you might be asked the reason for coming back and if you say for tourism, you might be investigated and consequently denied.
if i were you, i'd talk to my UK sponsors and tell them about your planned return and make arrangements with them to make your second visit official (like a one day follow-up training blah blah). this way, you'll be on the safe side in case they contact them. if your sponsor don't agree to this, it's up to you if you wanna take the risk, although if you ask me, don't!
another option is to apply for a tourist visa.. which i think is just crazy
