"I'm not overly fond of getting knocked into next week. You hold the advantage of both strength and reach with that spear." The banter from the assassins was interesting if nothing else but Victor's Russian was pretty rusty - whatever they were saying was obviously meant for the two of them so he wasn't even trying to figure it out.
"Last time Banner sat on a bee. The Hulk was cranky for almost a week after the dust settled." Stepping in he decided to try and cut off Brunhilde's full range of motion with the spear, ready to try and disengage again if his bold strategy failed. If she had pressed the attack while he evaded Price would have had a serious problem.
Spar or not he simply did not have the staying power to hold up against blows of the caliber the Valkyrie was capable of delivering. He'd already telegraphed his preference in dodging but he couldn't let himself fall into a pattern or she'd read him like a book and kick his ass. Likewise he knew she wouldn't let herself become predictable either.