Another stalling issue

Before I start, I've searched the forums however I can't seem to find an issue like mine.

I've owned the bike for 2 years. In my 1st year of owning it, I remember it stalling on me once as I came into town, never again had a problem.

Today I'm out for a ride (just cruising) at about 110 km/h in 6th and clutch in to make a turn and the bike dies. It started right back up. I know about the fuelling issue however I wasn't on the brakes, just clutching, and the bike had 75 km's on it from a full tank so more than half full.

I started testing / recreating the situation and found that from steady throttle or on acceleration at 5k rpm or higher, if the clutch is engaged and the revs fall to idle I could almost always get the stall. Sometimes the engine would drop to idle for a second or 2 THEN stall, other times it would drop and stall right away. While I don't make a habit of clutching to idle and coasting, I also found that a slow shift COULD also result in a stall. I have noticed a bit more backfiring this season.

I had the bike somewhat apart during the winter and cleaned then applied dielectric grease to most all of the connectors, including the BGC. I've checked the clutch switch and the metal tab is in the correct position and making contact when / where it should.

The bike is an 08 SD (US spec) with;
- charcoal canister and all plumbing removed, including the valve
- SAS and plumbing removed with block off plates
- MH airbox
- 2nd flies and motors removed
- Yosh exhaust
- EU Akra map (smoothened) with O2, SAS, and 2nd flies turned off (EU map so that I don't get an FI error due to the canister valve being removed)

Any ideas, suggestions?

Check clutch switch as per manual - I've replaced mine three times.