Flight Crew Instrument; Flight Crew Private
Situational Awareness
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Human Factors
Flying the published missed with autopilot in NAV and VS ALT to capture 4;000 [feet] as assigned by ATC. I was instructed to fly heading 070. After setting the heading bug to 070 I forgot to switch AP from NAV to HDG mode. The autopilot then started into the hold turning right to 161. [ATC] asked where I was going and at that point lost control trying to turn too steeply back to 070. In an unusual attitude I was trying to recover. Eventually; [I] hit the straight and level button on the autopilot and climbed above the cloud deck; got reoriented and rejoined the approach and landed without further problems.
SR22 pilot reported experiencing inflight loss of control while trying to correct to the proper track during a go-around.